Home / 10,949.74-15,115.47-7,988.17

Finding the Fourth Proportional to 10,949.74, 15,115.47 and 7,988.17

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Solution

The fourth proportional to 10,949.74, 15,115.47 and 7,988.17 is: 11,027.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,949.74 : 15,115.47 = 7,988.17 : x
  2. Step 2: Convert to fraction form
    10,949.74/15,115.47 = 7,988.17/x
  3. Step 3: Cross multiply
    10,949.74x = 15,115.47 × 7,988.17
  4. Step 4: Simplify right side
    10,949.74x = 120,744,943.99
  5. Step 5: Solve for x
    x = 120,744,943.99/10,949.74
  6. Step 6: Final answer
    x = 11,027.20

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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.