Home / 39,718.31-59,586.03-13,422.47

Finding the Fourth Proportional to 39,718.31, 59,586.03 and 13,422.47

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Solution

The fourth proportional to 39,718.31, 59,586.03 and 13,422.47 is: 20,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.31 : 59,586.03 = 13,422.47 : x
  2. Step 2: Convert to fraction form
    39,718.31/59,586.03 = 13,422.47/x
  3. Step 3: Cross multiply
    39,718.31x = 59,586.03 × 13,422.47
  4. Step 4: Simplify right side
    39,718.31x = 799,791,700.09
  5. Step 5: Solve for x
    x = 799,791,700.09/39,718.31
  6. Step 6: Final answer
    x = 20,136.60

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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.