Home / 21,475.13-29,630.94-20,767.19

Finding the Fourth Proportional to 21,475.13, 29,630.94 and 20,767.19

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Solution

The fourth proportional to 21,475.13, 29,630.94 and 20,767.19 is: 28,654.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,475.13 : 29,630.94 = 20,767.19 : x
  2. Step 2: Convert to fraction form
    21,475.13/29,630.94 = 20,767.19/x
  3. Step 3: Cross multiply
    21,475.13x = 29,630.94 × 20,767.19
  4. Step 4: Simplify right side
    21,475.13x = 615,351,212.70
  5. Step 5: Solve for x
    x = 615,351,212.70/21,475.13
  6. Step 6: Final answer
    x = 28,654.14

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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.