Home / 39,439.32-59,129.78-18,638.52

Finding the Fourth Proportional to 39,439.32, 59,129.78 and 18,638.52

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Solution

The fourth proportional to 39,439.32, 59,129.78 and 18,638.52 is: 27,943.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,439.32 : 59,129.78 = 18,638.52 : x
  2. Step 2: Convert to fraction form
    39,439.32/59,129.78 = 18,638.52/x
  3. Step 3: Cross multiply
    39,439.32x = 59,129.78 × 18,638.52
  4. Step 4: Simplify right side
    39,439.32x = 1,102,091,587.13
  5. Step 5: Solve for x
    x = 1,102,091,587.13/39,439.32
  6. Step 6: Final answer
    x = 27,943.98

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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.