Home / 10,956.75-15,120.56-5,988.75

Finding the Fourth Proportional to 10,956.75, 15,120.56 and 5,988.75

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Solution

The fourth proportional to 10,956.75, 15,120.56 and 5,988.75 is: 8,264.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.75 : 15,120.56 = 5,988.75 : x
  2. Step 2: Convert to fraction form
    10,956.75/15,120.56 = 5,988.75/x
  3. Step 3: Cross multiply
    10,956.75x = 15,120.56 × 5,988.75
  4. Step 4: Simplify right side
    10,956.75x = 90,553,223.76
  5. Step 5: Solve for x
    x = 90,553,223.76/10,956.75
  6. Step 6: Final answer
    x = 8,264.61

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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.