Home / 11,125.47-15,351.63-7,151.94

Finding the Fourth Proportional to 11,125.47, 15,351.63 and 7,151.94

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Solution

The fourth proportional to 11,125.47, 15,351.63 and 7,151.94 is: 9,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.47 : 15,351.63 = 7,151.94 : x
  2. Step 2: Convert to fraction form
    11,125.47/15,351.63 = 7,151.94/x
  3. Step 3: Cross multiply
    11,125.47x = 15,351.63 × 7,151.94
  4. Step 4: Simplify right side
    11,125.47x = 109,793,936.66
  5. Step 5: Solve for x
    x = 109,793,936.66/11,125.47
  6. Step 6: Final answer
    x = 9,868.70

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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.