Home / 13,565.61-20,351.52-5,245.71

Finding the Fourth Proportional to 13,565.61, 20,351.52 and 5,245.71

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Solution

The fourth proportional to 13,565.61, 20,351.52 and 5,245.71 is: 7,869.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.61 : 20,351.52 = 5,245.71 : x
  2. Step 2: Convert to fraction form
    13,565.61/20,351.52 = 5,245.71/x
  3. Step 3: Cross multiply
    13,565.61x = 20,351.52 × 5,245.71
  4. Step 4: Simplify right side
    13,565.61x = 106,758,171.98
  5. Step 5: Solve for x
    x = 106,758,171.98/13,565.61
  6. Step 6: Final answer
    x = 7,869.77

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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.