Home / 21,314.39-29,452.95-20,290.14

Finding the Fourth Proportional to 21,314.39, 29,452.95 and 20,290.14

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Solution

The fourth proportional to 21,314.39, 29,452.95 and 20,290.14 is: 28,037.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.39 : 29,452.95 = 20,290.14 : x
  2. Step 2: Convert to fraction form
    21,314.39/29,452.95 = 20,290.14/x
  3. Step 3: Cross multiply
    21,314.39x = 29,452.95 × 20,290.14
  4. Step 4: Simplify right side
    21,314.39x = 597,604,478.91
  5. Step 5: Solve for x
    x = 597,604,478.91/21,314.39
  6. Step 6: Final answer
    x = 28,037.61

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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.