Home / 20,948.60-31,433.14-9,856.39

Finding the Fourth Proportional to 20,948.60, 31,433.14 and 9,856.39

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Solution

The fourth proportional to 20,948.60, 31,433.14 and 9,856.39 is: 14,789.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.60 : 31,433.14 = 9,856.39 : x
  2. Step 2: Convert to fraction form
    20,948.60/31,433.14 = 9,856.39/x
  3. Step 3: Cross multiply
    20,948.60x = 31,433.14 × 9,856.39
  4. Step 4: Simplify right side
    20,948.60x = 309,817,286.76
  5. Step 5: Solve for x
    x = 309,817,286.76/20,948.60
  6. Step 6: Final answer
    x = 14,789.41

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1.5x scale

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.