Home / 39,426.80-59,149.66-13,131.78

Finding the Fourth Proportional to 39,426.80, 59,149.66 and 13,131.78

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Solution

The fourth proportional to 39,426.80, 59,149.66 and 13,131.78 is: 19,700.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,426.80 : 59,149.66 = 13,131.78 : x
  2. Step 2: Convert to fraction form
    39,426.80/59,149.66 = 13,131.78/x
  3. Step 3: Cross multiply
    39,426.80x = 59,149.66 × 13,131.78
  4. Step 4: Simplify right side
    39,426.80x = 776,740,322.19
  5. Step 5: Solve for x
    x = 776,740,322.19/39,426.80
  6. Step 6: Final answer
    x = 19,700.82

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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.