Home / 15,541.88-21,447.15-8,827.49

Finding the Fourth Proportional to 15,541.88, 21,447.15 and 8,827.49

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Solution

The fourth proportional to 15,541.88, 21,447.15 and 8,827.49 is: 12,181.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,541.88 : 21,447.15 = 8,827.49 : x
  2. Step 2: Convert to fraction form
    15,541.88/21,447.15 = 8,827.49/x
  3. Step 3: Cross multiply
    15,541.88x = 21,447.15 × 8,827.49
  4. Step 4: Simplify right side
    15,541.88x = 189,324,502.15
  5. Step 5: Solve for x
    x = 189,324,502.15/15,541.88
  6. Step 6: Final answer
    x = 12,181.57

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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.