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Finding the Fourth Proportional to 18,572.74, 27,816.18 and 11,160.86

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Solution

The fourth proportional to 18,572.74, 27,816.18 and 11,160.86 is: 16,715.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.74 : 27,816.18 = 11,160.86 : x
  2. Step 2: Convert to fraction form
    18,572.74/27,816.18 = 11,160.86/x
  3. Step 3: Cross multiply
    18,572.74x = 27,816.18 × 11,160.86
  4. Step 4: Simplify right side
    18,572.74x = 310,452,490.71
  5. Step 5: Solve for x
    x = 310,452,490.71/18,572.74
  6. Step 6: Final answer
    x = 16,715.49

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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.