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Finding the Fourth Proportional to 18,519.42, 25,557 and 10,562.12

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Solution

The fourth proportional to 18,519.42, 25,557 and 10,562.12 is: 14,575.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.42 : 25,557 = 10,562.12 : x
  2. Step 2: Convert to fraction form
    18,519.42/25,557 = 10,562.12/x
  3. Step 3: Cross multiply
    18,519.42x = 25,557 × 10,562.12
  4. Step 4: Simplify right side
    18,519.42x = 269,935,973.06
  5. Step 5: Solve for x
    x = 269,935,973.06/18,519.42
  6. Step 6: Final answer
    x = 14,575.83

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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.