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Finding the Fourth Proportional to 27,138.40, 40,700.08 and 9,605.92

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Solution

The fourth proportional to 27,138.40, 40,700.08 and 9,605.92 is: 14,406.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,138.40 : 40,700.08 = 9,605.92 : x
  2. Step 2: Convert to fraction form
    27,138.40/40,700.08 = 9,605.92/x
  3. Step 3: Cross multiply
    27,138.40x = 40,700.08 × 9,605.92
  4. Step 4: Simplify right side
    27,138.40x = 390,961,712.47
  5. Step 5: Solve for x
    x = 390,961,712.47/27,138.40
  6. Step 6: Final answer
    x = 14,406.22

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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.