Home / 20,580.57-28,401.71-12,627.18

Finding the Fourth Proportional to 20,580.57, 28,401.71 and 12,627.18

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Solution

The fourth proportional to 20,580.57, 28,401.71 and 12,627.18 is: 17,425.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.57 : 28,401.71 = 12,627.18 : x
  2. Step 2: Convert to fraction form
    20,580.57/28,401.71 = 12,627.18/x
  3. Step 3: Cross multiply
    20,580.57x = 28,401.71 × 12,627.18
  4. Step 4: Simplify right side
    20,580.57x = 358,633,441.34
  5. Step 5: Solve for x
    x = 358,633,441.34/20,580.57
  6. Step 6: Final answer
    x = 17,425.83

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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.