Home / 28,306.54-42,460.76-12,724.21

Finding the Fourth Proportional to 28,306.54, 42,460.76 and 12,724.21

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Solution

The fourth proportional to 28,306.54, 42,460.76 and 12,724.21 is: 19,086.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.54 : 42,460.76 = 12,724.21 : x
  2. Step 2: Convert to fraction form
    28,306.54/42,460.76 = 12,724.21/x
  3. Step 3: Cross multiply
    28,306.54x = 42,460.76 × 12,724.21
  4. Step 4: Simplify right side
    28,306.54x = 540,279,627.00
  5. Step 5: Solve for x
    x = 540,279,627.00/28,306.54
  6. Step 6: Final answer
    x = 19,086.74

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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.