Home / 15,899.28-21,941.04-8,825.68

Finding the Fourth Proportional to 15,899.28, 21,941.04 and 8,825.68

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Solution

The fourth proportional to 15,899.28, 21,941.04 and 8,825.68 is: 12,179.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.28 : 21,941.04 = 8,825.68 : x
  2. Step 2: Convert to fraction form
    15,899.28/21,941.04 = 8,825.68/x
  3. Step 3: Cross multiply
    15,899.28x = 21,941.04 × 8,825.68
  4. Step 4: Simplify right side
    15,899.28x = 193,644,597.91
  5. Step 5: Solve for x
    x = 193,644,597.91/15,899.28
  6. Step 6: Final answer
    x = 12,179.46

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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.