Home / 42,413.40-63,620.10-12,835.80

Finding the Fourth Proportional to 42,413.40, 63,620.10 and 12,835.80

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Solution

The fourth proportional to 42,413.40, 63,620.10 and 12,835.80 is: 19,253.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,413.40 : 63,620.10 = 12,835.80 : x
  2. Step 2: Convert to fraction form
    42,413.40/63,620.10 = 12,835.80/x
  3. Step 3: Cross multiply
    42,413.40x = 63,620.10 × 12,835.80
  4. Step 4: Simplify right side
    42,413.40x = 816,614,879.58
  5. Step 5: Solve for x
    x = 816,614,879.58/42,413.40
  6. Step 6: Final answer
    x = 19,253.70

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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.