Home / 10,901.76-15,040.54-7,127.09

Finding the Fourth Proportional to 10,901.76, 15,040.54 and 7,127.09

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Solution

The fourth proportional to 10,901.76, 15,040.54 and 7,127.09 is: 9,832.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,901.76 : 15,040.54 = 7,127.09 : x
  2. Step 2: Convert to fraction form
    10,901.76/15,040.54 = 7,127.09/x
  3. Step 3: Cross multiply
    10,901.76x = 15,040.54 × 7,127.09
  4. Step 4: Simplify right side
    10,901.76x = 107,195,282.23
  5. Step 5: Solve for x
    x = 107,195,282.23/10,901.76
  6. Step 6: Final answer
    x = 9,832.84

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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.