Home / 11,217.60-15,440.64-8,068.32

Finding the Fourth Proportional to 11,217.60, 15,440.64 and 8,068.32

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Solution

The fourth proportional to 11,217.60, 15,440.64 and 8,068.32 is: 11,105.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,217.60 : 15,440.64 = 8,068.32 : x
  2. Step 2: Convert to fraction form
    11,217.60/15,440.64 = 8,068.32/x
  3. Step 3: Cross multiply
    11,217.60x = 15,440.64 × 8,068.32
  4. Step 4: Simplify right side
    11,217.60x = 124,580,024.52
  5. Step 5: Solve for x
    x = 124,580,024.52/11,217.60
  6. Step 6: Final answer
    x = 11,105.76

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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.