Home / 10,278.08-15,401.68-7,934.55

Finding the Fourth Proportional to 10,278.08, 15,401.68 and 7,934.55

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Solution

The fourth proportional to 10,278.08, 15,401.68 and 7,934.55 is: 11,889.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.08 : 15,401.68 = 7,934.55 : x
  2. Step 2: Convert to fraction form
    10,278.08/15,401.68 = 7,934.55/x
  3. Step 3: Cross multiply
    10,278.08x = 15,401.68 × 7,934.55
  4. Step 4: Simplify right side
    10,278.08x = 122,205,322.45
  5. Step 5: Solve for x
    x = 122,205,322.45/10,278.08
  6. Step 6: Final answer
    x = 11,889.90

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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.