Home / 10,401.40-15,522.04-8,311.60

Finding the Fourth Proportional to 10,401.40, 15,522.04 and 8,311.60

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Solution

The fourth proportional to 10,401.40, 15,522.04 and 8,311.60 is: 12,403.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,401.40 : 15,522.04 = 8,311.60 : x
  2. Step 2: Convert to fraction form
    10,401.40/15,522.04 = 8,311.60/x
  3. Step 3: Cross multiply
    10,401.40x = 15,522.04 × 8,311.60
  4. Step 4: Simplify right side
    10,401.40x = 129,012,987.66
  5. Step 5: Solve for x
    x = 129,012,987.66/10,401.40
  6. Step 6: Final answer
    x = 12,403.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.