Home / 42,609.87-63,928.98-18,914.13

Finding the Fourth Proportional to 42,609.87, 63,928.98 and 18,914.13

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Solution

The fourth proportional to 42,609.87, 63,928.98 and 18,914.13 is: 28,377.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,609.87 : 63,928.98 = 18,914.13 : x
  2. Step 2: Convert to fraction form
    42,609.87/63,928.98 = 18,914.13/x
  3. Step 3: Cross multiply
    42,609.87x = 63,928.98 × 18,914.13
  4. Step 4: Simplify right side
    42,609.87x = 1,209,161,038.49
  5. Step 5: Solve for x
    x = 1,209,161,038.49/42,609.87
  6. Step 6: Final answer
    x = 28,377.49

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Double scale
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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.