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Finding the Fourth Proportional to 38,978.60, 58,453.44 and 14,011.92

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Solution

The fourth proportional to 38,978.60, 58,453.44 and 14,011.92 is: 21,012.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,978.60 : 58,453.44 = 14,011.92 : x
  2. Step 2: Convert to fraction form
    38,978.60/58,453.44 = 14,011.92/x
  3. Step 3: Cross multiply
    38,978.60x = 58,453.44 × 14,011.92
  4. Step 4: Simplify right side
    38,978.60x = 819,044,925.00
  5. Step 5: Solve for x
    x = 819,044,925.00/38,978.60
  6. Step 6: Final answer
    x = 21,012.68

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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.