Home / 11,170.70-15,414.95-6,390.74

Finding the Fourth Proportional to 11,170.70, 15,414.95 and 6,390.74

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Solution

The fourth proportional to 11,170.70, 15,414.95 and 6,390.74 is: 8,818.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,170.70 : 15,414.95 = 6,390.74 : x
  2. Step 2: Convert to fraction form
    11,170.70/15,414.95 = 6,390.74/x
  3. Step 3: Cross multiply
    11,170.70x = 15,414.95 × 6,390.74
  4. Step 4: Simplify right side
    11,170.70x = 98,512,828.53
  5. Step 5: Solve for x
    x = 98,512,828.53/11,170.70
  6. Step 6: Final answer
    x = 8,818.86

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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.