Home / 21,999.40-30,351.20-14,449.82

Finding the Fourth Proportional to 21,999.40, 30,351.20 and 14,449.82

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Solution

The fourth proportional to 21,999.40, 30,351.20 and 14,449.82 is: 19,935.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.40 : 30,351.20 = 14,449.82 : x
  2. Step 2: Convert to fraction form
    21,999.40/30,351.20 = 14,449.82/x
  3. Step 3: Cross multiply
    21,999.40x = 30,351.20 × 14,449.82
  4. Step 4: Simplify right side
    21,999.40x = 438,569,152.78
  5. Step 5: Solve for x
    x = 438,569,152.78/21,999.40
  6. Step 6: Final answer
    x = 19,935.51

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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.