Home / 21,063.13-29,205.61-20,360.58

Finding the Fourth Proportional to 21,063.13, 29,205.61 and 20,360.58

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Solution

The fourth proportional to 21,063.13, 29,205.61 and 20,360.58 is: 28,231.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063.13 : 29,205.61 = 20,360.58 : x
  2. Step 2: Convert to fraction form
    21,063.13/29,205.61 = 20,360.58/x
  3. Step 3: Cross multiply
    21,063.13x = 29,205.61 × 20,360.58
  4. Step 4: Simplify right side
    21,063.13x = 594,643,158.85
  5. Step 5: Solve for x
    x = 594,643,158.85/21,063.13
  6. Step 6: Final answer
    x = 28,231.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.