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Finding the Fourth Proportional to 18,618.86, 27,915.23 and 8,753.06

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Solution

The fourth proportional to 18,618.86, 27,915.23 and 8,753.06 is: 13,123.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.86 : 27,915.23 = 8,753.06 : x
  2. Step 2: Convert to fraction form
    18,618.86/27,915.23 = 8,753.06/x
  3. Step 3: Cross multiply
    18,618.86x = 27,915.23 × 8,753.06
  4. Step 4: Simplify right side
    18,618.86x = 244,343,774.77
  5. Step 5: Solve for x
    x = 244,343,774.77/18,618.86
  6. Step 6: Final answer
    x = 13,123.45

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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.