Home / 10,891.47-15,012.76-7,348.53

Finding the Fourth Proportional to 10,891.47, 15,012.76 and 7,348.53

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Solution

The fourth proportional to 10,891.47, 15,012.76 and 7,348.53 is: 10,129.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.47 : 15,012.76 = 7,348.53 : x
  2. Step 2: Convert to fraction form
    10,891.47/15,012.76 = 7,348.53/x
  3. Step 3: Cross multiply
    10,891.47x = 15,012.76 × 7,348.53
  4. Step 4: Simplify right side
    10,891.47x = 110,321,717.24
  5. Step 5: Solve for x
    x = 110,321,717.24/10,891.47
  6. Step 6: Final answer
    x = 10,129.19

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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.