Home / 20,929.14-31,393.76-5,134.23

Finding the Fourth Proportional to 20,929.14, 31,393.76 and 5,134.23

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Solution

The fourth proportional to 20,929.14, 31,393.76 and 5,134.23 is: 7,701.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.14 : 31,393.76 = 5,134.23 : x
  2. Step 2: Convert to fraction form
    20,929.14/31,393.76 = 5,134.23/x
  3. Step 3: Cross multiply
    20,929.14x = 31,393.76 × 5,134.23
  4. Step 4: Simplify right side
    20,929.14x = 161,182,758.73
  5. Step 5: Solve for x
    x = 161,182,758.73/20,929.14
  6. Step 6: Final answer
    x = 7,701.36

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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.