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Finding the Fourth Proportional to 27,006.60, 40,509.90 and 8,538.60

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Solution

The fourth proportional to 27,006.60, 40,509.90 and 8,538.60 is: 12,807.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,006.60 : 40,509.90 = 8,538.60 : x
  2. Step 2: Convert to fraction form
    27,006.60/40,509.90 = 8,538.60/x
  3. Step 3: Cross multiply
    27,006.60x = 40,509.90 × 8,538.60
  4. Step 4: Simplify right side
    27,006.60x = 345,897,832.14
  5. Step 5: Solve for x
    x = 345,897,832.14/27,006.60
  6. Step 6: Final answer
    x = 12,807.90

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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.