Home / 20,580.59-28,401.04-11,149.16

Finding the Fourth Proportional to 20,580.59, 28,401.04 and 11,149.16

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Solution

The fourth proportional to 20,580.59, 28,401.04 and 11,149.16 is: 15,385.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.59 : 28,401.04 = 11,149.16 : x
  2. Step 2: Convert to fraction form
    20,580.59/28,401.04 = 11,149.16/x
  3. Step 3: Cross multiply
    20,580.59x = 28,401.04 × 11,149.16
  4. Step 4: Simplify right side
    20,580.59x = 316,647,541.38
  5. Step 5: Solve for x
    x = 316,647,541.38/20,580.59
  6. Step 6: Final answer
    x = 15,385.74

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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.