Home / 11,036.40-15,229.92-6,320.64

Finding the Fourth Proportional to 11,036.40, 15,229.92 and 6,320.64

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Solution

The fourth proportional to 11,036.40, 15,229.92 and 6,320.64 is: 8,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,036.40 : 15,229.92 = 6,320.64 : x
  2. Step 2: Convert to fraction form
    11,036.40/15,229.92 = 6,320.64/x
  3. Step 3: Cross multiply
    11,036.40x = 15,229.92 × 6,320.64
  4. Step 4: Simplify right side
    11,036.40x = 96,262,841.55
  5. Step 5: Solve for x
    x = 96,262,841.55/11,036.40
  6. Step 6: Final answer
    x = 8,722.30

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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.