Home / 39,431.06-59,156-13,136.02

Finding the Fourth Proportional to 39,431.06, 59,156 and 13,136.02

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Solution

The fourth proportional to 39,431.06, 59,156 and 13,136.02 is: 19,707.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,431.06 : 59,156 = 13,136.02 : x
  2. Step 2: Convert to fraction form
    39,431.06/59,156 = 13,136.02/x
  3. Step 3: Cross multiply
    39,431.06x = 59,156 × 13,136.02
  4. Step 4: Simplify right side
    39,431.06x = 777,074,399.12
  5. Step 5: Solve for x
    x = 777,074,399.12/39,431.06
  6. Step 6: Final answer
    x = 19,707.16

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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.