Home / 20,332.28-30,517.68-10,478.36

Finding the Fourth Proportional to 20,332.28, 30,517.68 and 10,478.36

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Solution

The fourth proportional to 20,332.28, 30,517.68 and 10,478.36 is: 15,727.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.28 : 30,517.68 = 10,478.36 : x
  2. Step 2: Convert to fraction form
    20,332.28/30,517.68 = 10,478.36/x
  3. Step 3: Cross multiply
    20,332.28x = 30,517.68 × 10,478.36
  4. Step 4: Simplify right side
    20,332.28x = 319,775,237.40
  5. Step 5: Solve for x
    x = 319,775,237.40/20,332.28
  6. Step 6: Final answer
    x = 15,727.47

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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.