Home / 20,731.60-31,062.84-14,564.56

Finding the Fourth Proportional to 20,731.60, 31,062.84 and 14,564.56

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Solution

The fourth proportional to 20,731.60, 31,062.84 and 14,564.56 is: 21,822.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.60 : 31,062.84 = 14,564.56 : x
  2. Step 2: Convert to fraction form
    20,731.60/31,062.84 = 14,564.56/x
  3. Step 3: Cross multiply
    20,731.60x = 31,062.84 × 14,564.56
  4. Step 4: Simplify right side
    20,731.60x = 452,416,596.95
  5. Step 5: Solve for x
    x = 452,416,596.95/20,731.60
  6. Step 6: Final answer
    x = 21,822.56

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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.