Home / 20,351.47-28,084.38-11,276.46

Finding the Fourth Proportional to 20,351.47, 28,084.38 and 11,276.46

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Solution

The fourth proportional to 20,351.47, 28,084.38 and 11,276.46 is: 15,561.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.47 : 28,084.38 = 11,276.46 : x
  2. Step 2: Convert to fraction form
    20,351.47/28,084.38 = 11,276.46/x
  3. Step 3: Cross multiply
    20,351.47x = 28,084.38 × 11,276.46
  4. Step 4: Simplify right side
    20,351.47x = 316,692,387.69
  5. Step 5: Solve for x
    x = 316,692,387.69/20,351.47
  6. Step 6: Final answer
    x = 15,561.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.