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Finding the Fourth Proportional to 23,086.40, 34,631.40 and 9,939.20

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Solution

The fourth proportional to 23,086.40, 34,631.40 and 9,939.20 is: 14,909.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,086.40 : 34,631.40 = 9,939.20 : x
  2. Step 2: Convert to fraction form
    23,086.40/34,631.40 = 9,939.20/x
  3. Step 3: Cross multiply
    23,086.40x = 34,631.40 × 9,939.20
  4. Step 4: Simplify right side
    23,086.40x = 344,208,410.88
  5. Step 5: Solve for x
    x = 344,208,410.88/23,086.40
  6. Step 6: Final answer
    x = 14,909.57

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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.