Home / 10,254.40-15,381.60-3,680.80

Finding the Fourth Proportional to 10,254.40, 15,381.60 and 3,680.80

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Solution

The fourth proportional to 10,254.40, 15,381.60 and 3,680.80 is: 5,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,254.40 : 15,381.60 = 3,680.80 : x
  2. Step 2: Convert to fraction form
    10,254.40/15,381.60 = 3,680.80/x
  3. Step 3: Cross multiply
    10,254.40x = 15,381.60 × 3,680.80
  4. Step 4: Simplify right side
    10,254.40x = 56,616,593.28
  5. Step 5: Solve for x
    x = 56,616,593.28/10,254.40
  6. Step 6: Final answer
    x = 5,521.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.