Home / 20,856.62-31,284.65-5,061.77

Finding the Fourth Proportional to 20,856.62, 31,284.65 and 5,061.77

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Solution

The fourth proportional to 20,856.62, 31,284.65 and 5,061.77 is: 7,592.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.62 : 31,284.65 = 5,061.77 : x
  2. Step 2: Convert to fraction form
    20,856.62/31,284.65 = 5,061.77/x
  3. Step 3: Cross multiply
    20,856.62x = 31,284.65 × 5,061.77
  4. Step 4: Simplify right side
    20,856.62x = 158,355,793.70
  5. Step 5: Solve for x
    x = 158,355,793.70/20,856.62
  6. Step 6: Final answer
    x = 7,592.59

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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.