Home / 38,931.46-58,387.47-12,643.72

Finding the Fourth Proportional to 38,931.46, 58,387.47 and 12,643.72

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Solution

The fourth proportional to 38,931.46, 58,387.47 and 12,643.72 is: 18,962.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,931.46 : 58,387.47 = 12,643.72 : x
  2. Step 2: Convert to fraction form
    38,931.46/58,387.47 = 12,643.72/x
  3. Step 3: Cross multiply
    38,931.46x = 58,387.47 × 12,643.72
  4. Step 4: Simplify right side
    38,931.46x = 738,234,822.19
  5. Step 5: Solve for x
    x = 738,234,822.19/38,931.46
  6. Step 6: Final answer
    x = 18,962.42

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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.