Home / 10,869.78-15,001.11-6,154.77

Finding the Fourth Proportional to 10,869.78, 15,001.11 and 6,154.77

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Solution

The fourth proportional to 10,869.78, 15,001.11 and 6,154.77 is: 8,494.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.78 : 15,001.11 = 6,154.77 : x
  2. Step 2: Convert to fraction form
    10,869.78/15,001.11 = 6,154.77/x
  3. Step 3: Cross multiply
    10,869.78x = 15,001.11 × 6,154.77
  4. Step 4: Simplify right side
    10,869.78x = 92,328,381.79
  5. Step 5: Solve for x
    x = 92,328,381.79/10,869.78
  6. Step 6: Final answer
    x = 8,494.04

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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.