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Finding the Fourth Proportional to 17,885.61, 24,664.91 and 11,505.65

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Solution

The fourth proportional to 17,885.61, 24,664.91 and 11,505.65 is: 15,866.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,885.61 : 24,664.91 = 11,505.65 : x
  2. Step 2: Convert to fraction form
    17,885.61/24,664.91 = 11,505.65/x
  3. Step 3: Cross multiply
    17,885.61x = 24,664.91 × 11,505.65
  4. Step 4: Simplify right side
    17,885.61x = 283,785,640.89
  5. Step 5: Solve for x
    x = 283,785,640.89/17,885.61
  6. Step 6: Final answer
    x = 15,866.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.