Home / 28,177.14-42,272.74-8,456.06

Finding the Fourth Proportional to 28,177.14, 42,272.74 and 8,456.06

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Solution

The fourth proportional to 28,177.14, 42,272.74 and 8,456.06 is: 12,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.14 : 42,272.74 = 8,456.06 : x
  2. Step 2: Convert to fraction form
    28,177.14/42,272.74 = 8,456.06/x
  3. Step 3: Cross multiply
    28,177.14x = 42,272.74 × 8,456.06
  4. Step 4: Simplify right side
    28,177.14x = 357,460,825.80
  5. Step 5: Solve for x
    x = 357,460,825.80/28,177.14
  6. Step 6: Final answer
    x = 12,686.20

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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.