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Finding the Fourth Proportional to 20,488.60, 30,732.90 and 14,583.70

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Solution

The fourth proportional to 20,488.60, 30,732.90 and 14,583.70 is: 21,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.60 : 30,732.90 = 14,583.70 : x
  2. Step 2: Convert to fraction form
    20,488.60/30,732.90 = 14,583.70/x
  3. Step 3: Cross multiply
    20,488.60x = 30,732.90 × 14,583.70
  4. Step 4: Simplify right side
    20,488.60x = 448,199,393.73
  5. Step 5: Solve for x
    x = 448,199,393.73/20,488.60
  6. Step 6: Final answer
    x = 21,875.55

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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.