Home / 20,691.24-31,012.56-9,574.46

Finding the Fourth Proportional to 20,691.24, 31,012.56 and 9,574.46

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Solution

The fourth proportional to 20,691.24, 31,012.56 and 9,574.46 is: 14,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.24 : 31,012.56 = 9,574.46 : x
  2. Step 2: Convert to fraction form
    20,691.24/31,012.56 = 9,574.46/x
  3. Step 3: Cross multiply
    20,691.24x = 31,012.56 × 9,574.46
  4. Step 4: Simplify right side
    20,691.24x = 296,928,515.22
  5. Step 5: Solve for x
    x = 296,928,515.22/20,691.24
  6. Step 6: Final answer
    x = 14,350.45

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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.