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Finding the Fourth Proportional to 19,757.56, 29,637.12 and 8,658.76

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Solution

The fourth proportional to 19,757.56, 29,637.12 and 8,658.76 is: 12,988.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,757.56 : 29,637.12 = 8,658.76 : x
  2. Step 2: Convert to fraction form
    19,757.56/29,637.12 = 8,658.76/x
  3. Step 3: Cross multiply
    19,757.56x = 29,637.12 × 8,658.76
  4. Step 4: Simplify right side
    19,757.56x = 256,620,709.17
  5. Step 5: Solve for x
    x = 256,620,709.17/19,757.56
  6. Step 6: Final answer
    x = 12,988.48

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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.