Home / 12,378.18-18,565.14-4,057.98

Finding the Fourth Proportional to 12,378.18, 18,565.14 and 4,057.98

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Solution

The fourth proportional to 12,378.18, 18,565.14 and 4,057.98 is: 6,086.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.18 : 18,565.14 = 4,057.98 : x
  2. Step 2: Convert to fraction form
    12,378.18/18,565.14 = 4,057.98/x
  3. Step 3: Cross multiply
    12,378.18x = 18,565.14 × 4,057.98
  4. Step 4: Simplify right side
    12,378.18x = 75,336,966.82
  5. Step 5: Solve for x
    x = 75,336,966.82/12,378.18
  6. Step 6: Final answer
    x = 6,086.27

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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.