Home / 21,785.45-30,073.10-14,721.44

Finding the Fourth Proportional to 21,785.45, 30,073.10 and 14,721.44

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Solution

The fourth proportional to 21,785.45, 30,073.10 and 14,721.44 is: 20,321.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.45 : 30,073.10 = 14,721.44 : x
  2. Step 2: Convert to fraction form
    21,785.45/30,073.10 = 14,721.44/x
  3. Step 3: Cross multiply
    21,785.45x = 30,073.10 × 14,721.44
  4. Step 4: Simplify right side
    21,785.45x = 442,719,113.29
  5. Step 5: Solve for x
    x = 442,719,113.29/21,785.45
  6. Step 6: Final answer
    x = 20,321.78

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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.