Home / 21,827.95-30,126.51-12,874.92

Finding the Fourth Proportional to 21,827.95, 30,126.51 and 12,874.92

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Solution

The fourth proportional to 21,827.95, 30,126.51 and 12,874.92 is: 17,769.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.95 : 30,126.51 = 12,874.92 : x
  2. Step 2: Convert to fraction form
    21,827.95/30,126.51 = 12,874.92/x
  3. Step 3: Cross multiply
    21,827.95x = 30,126.51 × 12,874.92
  4. Step 4: Simplify right side
    21,827.95x = 387,876,406.13
  5. Step 5: Solve for x
    x = 387,876,406.13/21,827.95
  6. Step 6: Final answer
    x = 17,769.71

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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.