Home / 10,921.68-15,070.32-6,204.78

Finding the Fourth Proportional to 10,921.68, 15,070.32 and 6,204.78

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Solution

The fourth proportional to 10,921.68, 15,070.32 and 6,204.78 is: 8,561.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.68 : 15,070.32 = 6,204.78 : x
  2. Step 2: Convert to fraction form
    10,921.68/15,070.32 = 6,204.78/x
  3. Step 3: Cross multiply
    10,921.68x = 15,070.32 × 6,204.78
  4. Step 4: Simplify right side
    10,921.68x = 93,508,020.13
  5. Step 5: Solve for x
    x = 93,508,020.13/10,921.68
  6. Step 6: Final answer
    x = 8,561.69

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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.