Home / 11,149.77-15,377.79-9,476.70

Finding the Fourth Proportional to 11,149.77, 15,377.79 and 9,476.70

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Solution

The fourth proportional to 11,149.77, 15,377.79 and 9,476.70 is: 13,070.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.77 : 15,377.79 = 9,476.70 : x
  2. Step 2: Convert to fraction form
    11,149.77/15,377.79 = 9,476.70/x
  3. Step 3: Cross multiply
    11,149.77x = 15,377.79 × 9,476.70
  4. Step 4: Simplify right side
    11,149.77x = 145,730,702.49
  5. Step 5: Solve for x
    x = 145,730,702.49/11,149.77
  6. Step 6: Final answer
    x = 13,070.29

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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.