Home / 21,642.46-29,863.29-13,695.55

Finding the Fourth Proportional to 21,642.46, 29,863.29 and 13,695.55

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Solution

The fourth proportional to 21,642.46, 29,863.29 and 13,695.55 is: 18,897.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,642.46 : 29,863.29 = 13,695.55 : x
  2. Step 2: Convert to fraction form
    21,642.46/29,863.29 = 13,695.55/x
  3. Step 3: Cross multiply
    21,642.46x = 29,863.29 × 13,695.55
  4. Step 4: Simplify right side
    21,642.46x = 408,994,181.36
  5. Step 5: Solve for x
    x = 408,994,181.36/21,642.46
  6. Step 6: Final answer
    x = 18,897.77

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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.