Home / 11,877.43-17,811.28-4,478.17

Finding the Fourth Proportional to 11,877.43, 17,811.28 and 4,478.17

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Solution

The fourth proportional to 11,877.43, 17,811.28 and 4,478.17 is: 6,715.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,877.43 : 17,811.28 = 4,478.17 : x
  2. Step 2: Convert to fraction form
    11,877.43/17,811.28 = 4,478.17/x
  3. Step 3: Cross multiply
    11,877.43x = 17,811.28 × 4,478.17
  4. Step 4: Simplify right side
    11,877.43x = 79,761,939.76
  5. Step 5: Solve for x
    x = 79,761,939.76/11,877.43
  6. Step 6: Final answer
    x = 6,715.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.