Home / 11,230.24-15,488.40-8,430.88

Finding the Fourth Proportional to 11,230.24, 15,488.40 and 8,430.88

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Solution

The fourth proportional to 11,230.24, 15,488.40 and 8,430.88 is: 11,627.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,230.24 : 15,488.40 = 8,430.88 : x
  2. Step 2: Convert to fraction form
    11,230.24/15,488.40 = 8,430.88/x
  3. Step 3: Cross multiply
    11,230.24x = 15,488.40 × 8,430.88
  4. Step 4: Simplify right side
    11,230.24x = 130,580,841.79
  5. Step 5: Solve for x
    x = 130,580,841.79/11,230.24
  6. Step 6: Final answer
    x = 11,627.61

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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.