Home / 20,260.56-27,971.28-15,442.68

Finding the Fourth Proportional to 20,260.56, 27,971.28 and 15,442.68

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Solution

The fourth proportional to 20,260.56, 27,971.28 and 15,442.68 is: 21,319.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.56 : 27,971.28 = 15,442.68 : x
  2. Step 2: Convert to fraction form
    20,260.56/27,971.28 = 15,442.68/x
  3. Step 3: Cross multiply
    20,260.56x = 27,971.28 × 15,442.68
  4. Step 4: Simplify right side
    20,260.56x = 431,951,526.23
  5. Step 5: Solve for x
    x = 431,951,526.23/20,260.56
  6. Step 6: Final answer
    x = 21,319.82

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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.