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Finding the Fourth Proportional to 38,962.60, 58,443.90 and 12,668.20

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Solution

The fourth proportional to 38,962.60, 58,443.90 and 12,668.20 is: 19,002.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,962.60 : 58,443.90 = 12,668.20 : x
  2. Step 2: Convert to fraction form
    38,962.60/58,443.90 = 12,668.20/x
  3. Step 3: Cross multiply
    38,962.60x = 58,443.90 × 12,668.20
  4. Step 4: Simplify right side
    38,962.60x = 740,379,013.98
  5. Step 5: Solve for x
    x = 740,379,013.98/38,962.60
  6. Step 6: Final answer
    x = 19,002.30

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1.5x scale

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.