Home / 20,691.45-31,037.31-14,101.29

Finding the Fourth Proportional to 20,691.45, 31,037.31 and 14,101.29

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Solution

The fourth proportional to 20,691.45, 31,037.31 and 14,101.29 is: 21,152.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.45 : 31,037.31 = 14,101.29 : x
  2. Step 2: Convert to fraction form
    20,691.45/31,037.31 = 14,101.29/x
  3. Step 3: Cross multiply
    20,691.45x = 31,037.31 × 14,101.29
  4. Step 4: Simplify right side
    20,691.45x = 437,666,109.13
  5. Step 5: Solve for x
    x = 437,666,109.13/20,691.45
  6. Step 6: Final answer
    x = 21,152.03

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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.