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Finding the Fourth Proportional to 39,535.80, 59,310.72 and 13,243.20

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Solution

The fourth proportional to 39,535.80, 59,310.72 and 13,243.20 is: 19,867.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,535.80 : 59,310.72 = 13,243.20 : x
  2. Step 2: Convert to fraction form
    39,535.80/59,310.72 = 13,243.20/x
  3. Step 3: Cross multiply
    39,535.80x = 59,310.72 × 13,243.20
  4. Step 4: Simplify right side
    39,535.80x = 785,463,727.10
  5. Step 5: Solve for x
    x = 785,463,727.10/39,535.80
  6. Step 6: Final answer
    x = 19,867.15

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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.