Home / 11,101.59-15,316.56-7,915.39

Finding the Fourth Proportional to 11,101.59, 15,316.56 and 7,915.39

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Solution

The fourth proportional to 11,101.59, 15,316.56 and 7,915.39 is: 10,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,101.59 : 15,316.56 = 7,915.39 : x
  2. Step 2: Convert to fraction form
    11,101.59/15,316.56 = 7,915.39/x
  3. Step 3: Cross multiply
    11,101.59x = 15,316.56 × 7,915.39
  4. Step 4: Simplify right side
    11,101.59x = 121,236,507.57
  5. Step 5: Solve for x
    x = 121,236,507.57/11,101.59
  6. Step 6: Final answer
    x = 10,920.64

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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.