Home / 10,721.60-16,082.40-6,625.60

Finding the Fourth Proportional to 10,721.60, 16,082.40 and 6,625.60

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Solution

The fourth proportional to 10,721.60, 16,082.40 and 6,625.60 is: 9,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.60 : 16,082.40 = 6,625.60 : x
  2. Step 2: Convert to fraction form
    10,721.60/16,082.40 = 6,625.60/x
  3. Step 3: Cross multiply
    10,721.60x = 16,082.40 × 6,625.60
  4. Step 4: Simplify right side
    10,721.60x = 106,555,549.44
  5. Step 5: Solve for x
    x = 106,555,549.44/10,721.60
  6. Step 6: Final answer
    x = 9,938.40

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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.