Home / 39,424.32-59,145.90-13,129.28

Finding the Fourth Proportional to 39,424.32, 59,145.90 and 13,129.28

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Solution

The fourth proportional to 39,424.32, 59,145.90 and 13,129.28 is: 19,697.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,424.32 : 59,145.90 = 13,129.28 : x
  2. Step 2: Convert to fraction form
    39,424.32/59,145.90 = 13,129.28/x
  3. Step 3: Cross multiply
    39,424.32x = 59,145.90 × 13,129.28
  4. Step 4: Simplify right side
    39,424.32x = 776,543,081.95
  5. Step 5: Solve for x
    x = 776,543,081.95/39,424.32
  6. Step 6: Final answer
    x = 19,697.06

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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.