Home / 11,397.83-15,730.97-8,422.29

Finding the Fourth Proportional to 11,397.83, 15,730.97 and 8,422.29

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Solution

The fourth proportional to 11,397.83, 15,730.97 and 8,422.29 is: 11,624.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.83 : 15,730.97 = 8,422.29 : x
  2. Step 2: Convert to fraction form
    11,397.83/15,730.97 = 8,422.29/x
  3. Step 3: Cross multiply
    11,397.83x = 15,730.97 × 8,422.29
  4. Step 4: Simplify right side
    11,397.83x = 132,490,749.21
  5. Step 5: Solve for x
    x = 132,490,749.21/11,397.83
  6. Step 6: Final answer
    x = 11,624.21

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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.