Home / 11,398.72-15,725.76-6,920.88

Finding the Fourth Proportional to 11,398.72, 15,725.76 and 6,920.88

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Solution

The fourth proportional to 11,398.72, 15,725.76 and 6,920.88 is: 9,548.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,398.72 : 15,725.76 = 6,920.88 : x
  2. Step 2: Convert to fraction form
    11,398.72/15,725.76 = 6,920.88/x
  3. Step 3: Cross multiply
    11,398.72x = 15,725.76 × 6,920.88
  4. Step 4: Simplify right side
    11,398.72x = 108,836,097.87
  5. Step 5: Solve for x
    x = 108,836,097.87/11,398.72
  6. Step 6: Final answer
    x = 9,548.10

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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.