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Finding the Fourth Proportional to 14,574.78, 20,113.02 and 8,287.11

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Solution

The fourth proportional to 14,574.78, 20,113.02 and 8,287.11 is: 11,436.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,574.78 : 20,113.02 = 8,287.11 : x
  2. Step 2: Convert to fraction form
    14,574.78/20,113.02 = 8,287.11/x
  3. Step 3: Cross multiply
    14,574.78x = 20,113.02 × 8,287.11
  4. Step 4: Simplify right side
    14,574.78x = 166,678,809.17
  5. Step 5: Solve for x
    x = 166,678,809.17/14,574.78
  6. Step 6: Final answer
    x = 11,436.11

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Half scale
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Double scale
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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.