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Finding the Fourth Proportional to 18,534.81, 25,577.02 and 10,981.83

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Solution

The fourth proportional to 18,534.81, 25,577.02 and 10,981.83 is: 15,154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,534.81 : 25,577.02 = 10,981.83 : x
  2. Step 2: Convert to fraction form
    18,534.81/25,577.02 = 10,981.83/x
  3. Step 3: Cross multiply
    18,534.81x = 25,577.02 × 10,981.83
  4. Step 4: Simplify right side
    18,534.81x = 280,882,595.19
  5. Step 5: Solve for x
    x = 280,882,595.19/18,534.81
  6. Step 6: Final answer
    x = 15,154.33

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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.