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Finding the Fourth Proportional to 18,056.78, 27,085.17 and 4,908.86

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Solution

The fourth proportional to 18,056.78, 27,085.17 and 4,908.86 is: 7,363.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,056.78 : 27,085.17 = 4,908.86 : x
  2. Step 2: Convert to fraction form
    18,056.78/27,085.17 = 4,908.86/x
  3. Step 3: Cross multiply
    18,056.78x = 27,085.17 × 4,908.86
  4. Step 4: Simplify right side
    18,056.78x = 132,957,307.61
  5. Step 5: Solve for x
    x = 132,957,307.61/18,056.78
  6. Step 6: Final answer
    x = 7,363.29

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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.