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Finding the Fourth Proportional to 15,502.70, 23,205.45 and 11,128.70

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Solution

The fourth proportional to 15,502.70, 23,205.45 and 11,128.70 is: 16,658.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.70 : 23,205.45 = 11,128.70 : x
  2. Step 2: Convert to fraction form
    15,502.70/23,205.45 = 11,128.70/x
  3. Step 3: Cross multiply
    15,502.70x = 23,205.45 × 11,128.70
  4. Step 4: Simplify right side
    15,502.70x = 258,246,491.42
  5. Step 5: Solve for x
    x = 258,246,491.42/15,502.70
  6. Step 6: Final answer
    x = 16,658.16

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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.