Home / 11,871.04-16,381.92-7,156.48

Finding the Fourth Proportional to 11,871.04, 16,381.92 and 7,156.48

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Solution

The fourth proportional to 11,871.04, 16,381.92 and 7,156.48 is: 9,875.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,871.04 : 16,381.92 = 7,156.48 : x
  2. Step 2: Convert to fraction form
    11,871.04/16,381.92 = 7,156.48/x
  3. Step 3: Cross multiply
    11,871.04x = 16,381.92 × 7,156.48
  4. Step 4: Simplify right side
    11,871.04x = 117,236,882.84
  5. Step 5: Solve for x
    x = 117,236,882.84/11,871.04
  6. Step 6: Final answer
    x = 9,875.87

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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.