Home / 20,943.06-31,425.27-13,927.85

Finding the Fourth Proportional to 20,943.06, 31,425.27 and 13,927.85

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Solution

The fourth proportional to 20,943.06, 31,425.27 and 13,927.85 is: 20,898.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.06 : 31,425.27 = 13,927.85 : x
  2. Step 2: Convert to fraction form
    20,943.06/31,425.27 = 13,927.85/x
  3. Step 3: Cross multiply
    20,943.06x = 31,425.27 × 13,927.85
  4. Step 4: Simplify right side
    20,943.06x = 437,686,355.26
  5. Step 5: Solve for x
    x = 437,686,355.26/20,943.06
  6. Step 6: Final answer
    x = 20,898.88

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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.