Home / 10,947.28-15,104.47-6,696.80

Finding the Fourth Proportional to 10,947.28, 15,104.47 and 6,696.80

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Solution

The fourth proportional to 10,947.28, 15,104.47 and 6,696.80 is: 9,239.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,947.28 : 15,104.47 = 6,696.80 : x
  2. Step 2: Convert to fraction form
    10,947.28/15,104.47 = 6,696.80/x
  3. Step 3: Cross multiply
    10,947.28x = 15,104.47 × 6,696.80
  4. Step 4: Simplify right side
    10,947.28x = 101,151,614.70
  5. Step 5: Solve for x
    x = 101,151,614.70/10,947.28
  6. Step 6: Final answer
    x = 9,239.89

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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.