Home / 21,876.15-30,178.57-14,319.15

Finding the Fourth Proportional to 21,876.15, 30,178.57 and 14,319.15

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Solution

The fourth proportional to 21,876.15, 30,178.57 and 14,319.15 is: 19,753.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,876.15 : 30,178.57 = 14,319.15 : x
  2. Step 2: Convert to fraction form
    21,876.15/30,178.57 = 14,319.15/x
  3. Step 3: Cross multiply
    21,876.15x = 30,178.57 × 14,319.15
  4. Step 4: Simplify right side
    21,876.15x = 432,131,470.62
  5. Step 5: Solve for x
    x = 432,131,470.62/21,876.15
  6. Step 6: Final answer
    x = 19,753.54

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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.