Home / 11,531.20-15,904.56-8,547.16

Finding the Fourth Proportional to 11,531.20, 15,904.56 and 8,547.16

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Solution

The fourth proportional to 11,531.20, 15,904.56 and 8,547.16 is: 11,788.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,531.20 : 15,904.56 = 8,547.16 : x
  2. Step 2: Convert to fraction form
    11,531.20/15,904.56 = 8,547.16/x
  3. Step 3: Cross multiply
    11,531.20x = 15,904.56 × 8,547.16
  4. Step 4: Simplify right side
    11,531.20x = 135,938,819.05
  5. Step 5: Solve for x
    x = 135,938,819.05/11,531.20
  6. Step 6: Final answer
    x = 11,788.78

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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.