Home / 12,290,413.90-18,435,620.85-8,464,038.70

Finding the Fourth Proportional to 12,290,413.90, 18,435,620.85 and 8,464,038.70

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Solution

The fourth proportional to 12,290,413.90, 18,435,620.85 and 8,464,038.70 is: 12,696,058.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290,413.90 : 18,435,620.85 = 8,464,038.70 : x
  2. Step 2: Convert to fraction form
    12,290,413.90/18,435,620.85 = 8,464,038.70/x
  3. Step 3: Cross multiply
    12,290,413.90x = 18,435,620.85 × 8,464,038.70
  4. Step 4: Simplify right side
    12,290,413.90x = 156,039,808,332,926.91
  5. Step 5: Solve for x
    x = 156,039,808,332,926.91/12,290,413.90
  6. Step 6: Final answer
    x = 12,696,058.05

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.