Home / 20,975.28-31,454.76-8,492.16

Finding the Fourth Proportional to 20,975.28, 31,454.76 and 8,492.16

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Solution

The fourth proportional to 20,975.28, 31,454.76 and 8,492.16 is: 12,734.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.28 : 31,454.76 = 8,492.16 : x
  2. Step 2: Convert to fraction form
    20,975.28/31,454.76 = 8,492.16/x
  3. Step 3: Cross multiply
    20,975.28x = 31,454.76 × 8,492.16
  4. Step 4: Simplify right side
    20,975.28x = 267,118,854.68
  5. Step 5: Solve for x
    x = 267,118,854.68/20,975.28
  6. Step 6: Final answer
    x = 12,734.94

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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.