Home / 21,422.32-29,540.28-14,350.32

Finding the Fourth Proportional to 21,422.32, 29,540.28 and 14,350.32

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Solution

The fourth proportional to 21,422.32, 29,540.28 and 14,350.32 is: 19,788.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.32 : 29,540.28 = 14,350.32 : x
  2. Step 2: Convert to fraction form
    21,422.32/29,540.28 = 14,350.32/x
  3. Step 3: Cross multiply
    21,422.32x = 29,540.28 × 14,350.32
  4. Step 4: Simplify right side
    21,422.32x = 423,912,470.89
  5. Step 5: Solve for x
    x = 423,912,470.89/21,422.32
  6. Step 6: Final answer
    x = 19,788.35

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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.