Home / 10,929.60-15,082.20-6,213.96

Finding the Fourth Proportional to 10,929.60, 15,082.20 and 6,213.96

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Solution

The fourth proportional to 10,929.60, 15,082.20 and 6,213.96 is: 8,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.60 : 15,082.20 = 6,213.96 : x
  2. Step 2: Convert to fraction form
    10,929.60/15,082.20 = 6,213.96/x
  3. Step 3: Cross multiply
    10,929.60x = 15,082.20 × 6,213.96
  4. Step 4: Simplify right side
    10,929.60x = 93,720,187.51
  5. Step 5: Solve for x
    x = 93,720,187.51/10,929.60
  6. Step 6: Final answer
    x = 8,574.90

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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.