Home / 39,424.80-59,146.66-13,129.78

Finding the Fourth Proportional to 39,424.80, 59,146.66 and 13,129.78

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Solution

The fourth proportional to 39,424.80, 59,146.66 and 13,129.78 is: 19,697.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,424.80 : 59,146.66 = 13,129.78 : x
  2. Step 2: Convert to fraction form
    39,424.80/59,146.66 = 13,129.78/x
  3. Step 3: Cross multiply
    39,424.80x = 59,146.66 × 13,129.78
  4. Step 4: Simplify right side
    39,424.80x = 776,582,633.53
  5. Step 5: Solve for x
    x = 776,582,633.53/39,424.80
  6. Step 6: Final answer
    x = 19,697.82

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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.