Home / 11,149.06-15,384.45-6,434.90

Finding the Fourth Proportional to 11,149.06, 15,384.45 and 6,434.90

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Solution

The fourth proportional to 11,149.06, 15,384.45 and 6,434.90 is: 8,879.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.06 : 15,384.45 = 6,434.90 : x
  2. Step 2: Convert to fraction form
    11,149.06/15,384.45 = 6,434.90/x
  3. Step 3: Cross multiply
    11,149.06x = 15,384.45 × 6,434.90
  4. Step 4: Simplify right side
    11,149.06x = 98,997,397.31
  5. Step 5: Solve for x
    x = 98,997,397.31/11,149.06
  6. Step 6: Final answer
    x = 8,879.44

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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.