Home / 28,177.46-38,883.17-15,430.79

Finding the Fourth Proportional to 28,177.46, 38,883.17 and 15,430.79

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Solution

The fourth proportional to 28,177.46, 38,883.17 and 15,430.79 is: 21,293.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.46 : 38,883.17 = 15,430.79 : x
  2. Step 2: Convert to fraction form
    28,177.46/38,883.17 = 15,430.79/x
  3. Step 3: Cross multiply
    28,177.46x = 38,883.17 × 15,430.79
  4. Step 4: Simplify right side
    28,177.46x = 599,998,030.80
  5. Step 5: Solve for x
    x = 599,998,030.80/28,177.46
  6. Step 6: Final answer
    x = 21,293.55

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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.