Home / 10,899.12-15,036.12-8,531.76

Finding the Fourth Proportional to 10,899.12, 15,036.12 and 8,531.76

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Solution

The fourth proportional to 10,899.12, 15,036.12 and 8,531.76 is: 11,770.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,899.12 : 15,036.12 = 8,531.76 : x
  2. Step 2: Convert to fraction form
    10,899.12/15,036.12 = 8,531.76/x
  3. Step 3: Cross multiply
    10,899.12x = 15,036.12 × 8,531.76
  4. Step 4: Simplify right side
    10,899.12x = 128,284,567.17
  5. Step 5: Solve for x
    x = 128,284,567.17/10,899.12
  6. Step 6: Final answer
    x = 11,770.18

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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.