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Finding the Fourth Proportional to 19,557.80, 29,307.90 and 16,620.20

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Solution

The fourth proportional to 19,557.80, 29,307.90 and 16,620.20 is: 24,905.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,557.80 : 29,307.90 = 16,620.20 : x
  2. Step 2: Convert to fraction form
    19,557.80/29,307.90 = 16,620.20/x
  3. Step 3: Cross multiply
    19,557.80x = 29,307.90 × 16,620.20
  4. Step 4: Simplify right side
    19,557.80x = 487,103,159.58
  5. Step 5: Solve for x
    x = 487,103,159.58/19,557.80
  6. Step 6: Final answer
    x = 24,905.83

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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.