Home / 11,055.20-15,255.08-6,338.80

Finding the Fourth Proportional to 11,055.20, 15,255.08 and 6,338.80

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Solution

The fourth proportional to 11,055.20, 15,255.08 and 6,338.80 is: 8,746.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,055.20 : 15,255.08 = 6,338.80 : x
  2. Step 2: Convert to fraction form
    11,055.20/15,255.08 = 6,338.80/x
  3. Step 3: Cross multiply
    11,055.20x = 15,255.08 × 6,338.80
  4. Step 4: Simplify right side
    11,055.20x = 96,698,901.10
  5. Step 5: Solve for x
    x = 96,698,901.10/11,055.20
  6. Step 6: Final answer
    x = 8,746.92

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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.