Home / 20,491.60-28,278.72-12,532.12

Finding the Fourth Proportional to 20,491.60, 28,278.72 and 12,532.12

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Solution

The fourth proportional to 20,491.60, 28,278.72 and 12,532.12 is: 17,294.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.60 : 28,278.72 = 12,532.12 : x
  2. Step 2: Convert to fraction form
    20,491.60/28,278.72 = 12,532.12/x
  3. Step 3: Cross multiply
    20,491.60x = 28,278.72 × 12,532.12
  4. Step 4: Simplify right side
    20,491.60x = 354,392,312.49
  5. Step 5: Solve for x
    x = 354,392,312.49/20,491.60
  6. Step 6: Final answer
    x = 17,294.52

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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.