Home / 15,442.55-21,310.88-9,069.21

Finding the Fourth Proportional to 15,442.55, 21,310.88 and 9,069.21

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Solution

The fourth proportional to 15,442.55, 21,310.88 and 9,069.21 is: 12,515.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.55 : 21,310.88 = 9,069.21 : x
  2. Step 2: Convert to fraction form
    15,442.55/21,310.88 = 9,069.21/x
  3. Step 3: Cross multiply
    15,442.55x = 21,310.88 × 9,069.21
  4. Step 4: Simplify right side
    15,442.55x = 193,272,800.66
  5. Step 5: Solve for x
    x = 193,272,800.66/15,442.55
  6. Step 6: Final answer
    x = 12,515.61

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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.