Home / 14,515.28-20,012.28-9,401.70

Finding the Fourth Proportional to 14,515.28, 20,012.28 and 9,401.70

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Solution

The fourth proportional to 14,515.28, 20,012.28 and 9,401.70 is: 12,962.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.28 : 20,012.28 = 9,401.70 : x
  2. Step 2: Convert to fraction form
    14,515.28/20,012.28 = 9,401.70/x
  3. Step 3: Cross multiply
    14,515.28x = 20,012.28 × 9,401.70
  4. Step 4: Simplify right side
    14,515.28x = 188,149,452.88
  5. Step 5: Solve for x
    x = 188,149,452.88/14,515.28
  6. Step 6: Final answer
    x = 12,962.16

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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.