Home / 10,721.40-16,082.10-9,684.60

Finding the Fourth Proportional to 10,721.40, 16,082.10 and 9,684.60

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Solution

The fourth proportional to 10,721.40, 16,082.10 and 9,684.60 is: 14,526.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.40 : 16,082.10 = 9,684.60 : x
  2. Step 2: Convert to fraction form
    10,721.40/16,082.10 = 9,684.60/x
  3. Step 3: Cross multiply
    10,721.40x = 16,082.10 × 9,684.60
  4. Step 4: Simplify right side
    10,721.40x = 155,748,705.66
  5. Step 5: Solve for x
    x = 155,748,705.66/10,721.40
  6. Step 6: Final answer
    x = 14,526.90

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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.