Home / 10,885.62-15,022.31-8,155.32

Finding the Fourth Proportional to 10,885.62, 15,022.31 and 8,155.32

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Solution

The fourth proportional to 10,885.62, 15,022.31 and 8,155.32 is: 11,254.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.62 : 15,022.31 = 8,155.32 : x
  2. Step 2: Convert to fraction form
    10,885.62/15,022.31 = 8,155.32/x
  3. Step 3: Cross multiply
    10,885.62x = 15,022.31 × 8,155.32
  4. Step 4: Simplify right side
    10,885.62x = 122,511,693.95
  5. Step 5: Solve for x
    x = 122,511,693.95/10,885.62
  6. Step 6: Final answer
    x = 11,254.45

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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.