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Finding the Fourth Proportional to 18,560.65, 25,612.60 and 11,007.70

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Solution

The fourth proportional to 18,560.65, 25,612.60 and 11,007.70 is: 15,189.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,560.65 : 25,612.60 = 11,007.70 : x
  2. Step 2: Convert to fraction form
    18,560.65/25,612.60 = 11,007.70/x
  3. Step 3: Cross multiply
    18,560.65x = 25,612.60 × 11,007.70
  4. Step 4: Simplify right side
    18,560.65x = 281,935,817.02
  5. Step 5: Solve for x
    x = 281,935,817.02/18,560.65
  6. Step 6: Final answer
    x = 15,189.98

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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.