Home / 21,452.28-29,741.45-20,271.30

Finding the Fourth Proportional to 21,452.28, 29,741.45 and 20,271.30

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Solution

The fourth proportional to 21,452.28, 29,741.45 and 20,271.30 is: 28,104.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,452.28 : 29,741.45 = 20,271.30 : x
  2. Step 2: Convert to fraction form
    21,452.28/29,741.45 = 20,271.30/x
  3. Step 3: Cross multiply
    21,452.28x = 29,741.45 × 20,271.30
  4. Step 4: Simplify right side
    21,452.28x = 602,897,754.03
  5. Step 5: Solve for x
    x = 602,897,754.03/21,452.28
  6. Step 6: Final answer
    x = 28,104.13

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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.