Home / 20,493.90-28,281.68-11,541.55

Finding the Fourth Proportional to 20,493.90, 28,281.68 and 11,541.55

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Solution

The fourth proportional to 20,493.90, 28,281.68 and 11,541.55 is: 15,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,493.90 : 28,281.68 = 11,541.55 : x
  2. Step 2: Convert to fraction form
    20,493.90/28,281.68 = 11,541.55/x
  3. Step 3: Cross multiply
    20,493.90x = 28,281.68 × 11,541.55
  4. Step 4: Simplify right side
    20,493.90x = 326,414,366.10
  5. Step 5: Solve for x
    x = 326,414,366.10/20,493.90
  6. Step 6: Final answer
    x = 15,927.40

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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.