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Finding the Fourth Proportional to 19,658.61, 29,504.85 and 10,305.12

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Solution

The fourth proportional to 19,658.61, 29,504.85 and 10,305.12 is: 15,466.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658.61 : 29,504.85 = 10,305.12 : x
  2. Step 2: Convert to fraction form
    19,658.61/29,504.85 = 10,305.12/x
  3. Step 3: Cross multiply
    19,658.61x = 29,504.85 × 10,305.12
  4. Step 4: Simplify right side
    19,658.61x = 304,051,019.83
  5. Step 5: Solve for x
    x = 304,051,019.83/19,658.61
  6. Step 6: Final answer
    x = 15,466.56

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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.