Home / 11,201.39-15,458.13-6,488.40

Finding the Fourth Proportional to 11,201.39, 15,458.13 and 6,488.40

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Solution

The fourth proportional to 11,201.39, 15,458.13 and 6,488.40 is: 8,954.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,201.39 : 15,458.13 = 6,488.40 : x
  2. Step 2: Convert to fraction form
    11,201.39/15,458.13 = 6,488.40/x
  3. Step 3: Cross multiply
    11,201.39x = 15,458.13 × 6,488.40
  4. Step 4: Simplify right side
    11,201.39x = 100,298,530.69
  5. Step 5: Solve for x
    x = 100,298,530.69/11,201.39
  6. Step 6: Final answer
    x = 8,954.11

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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.