Home / 12,290.58-18,435.87-4,394.70

Finding the Fourth Proportional to 12,290.58, 18,435.87 and 4,394.70

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Solution

The fourth proportional to 12,290.58, 18,435.87 and 4,394.70 is: 6,592.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.58 : 18,435.87 = 4,394.70 : x
  2. Step 2: Convert to fraction form
    12,290.58/18,435.87 = 4,394.70/x
  3. Step 3: Cross multiply
    12,290.58x = 18,435.87 × 4,394.70
  4. Step 4: Simplify right side
    12,290.58x = 81,020,117.89
  5. Step 5: Solve for x
    x = 81,020,117.89/12,290.58
  6. Step 6: Final answer
    x = 6,592.05

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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.