Home / 20,865.96-31,244.25-14,304.96

Finding the Fourth Proportional to 20,865.96, 31,244.25 and 14,304.96

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Solution

The fourth proportional to 20,865.96, 31,244.25 and 14,304.96 is: 21,419.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.96 : 31,244.25 = 14,304.96 : x
  2. Step 2: Convert to fraction form
    20,865.96/31,244.25 = 14,304.96/x
  3. Step 3: Cross multiply
    20,865.96x = 31,244.25 × 14,304.96
  4. Step 4: Simplify right side
    20,865.96x = 446,947,746.48
  5. Step 5: Solve for x
    x = 446,947,746.48/20,865.96
  6. Step 6: Final answer
    x = 21,419.95

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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.