Home / 10,957.76-15,127.84-7,238.24

Finding the Fourth Proportional to 10,957.76, 15,127.84 and 7,238.24

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Solution

The fourth proportional to 10,957.76, 15,127.84 and 7,238.24 is: 9,992.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,957.76 : 15,127.84 = 7,238.24 : x
  2. Step 2: Convert to fraction form
    10,957.76/15,127.84 = 7,238.24/x
  3. Step 3: Cross multiply
    10,957.76x = 15,127.84 × 7,238.24
  4. Step 4: Simplify right side
    10,957.76x = 109,498,936.60
  5. Step 5: Solve for x
    x = 109,498,936.60/10,957.76
  6. Step 6: Final answer
    x = 9,992.82

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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.