Home / 21,343.40-32,015.10-19,229.30

Finding the Fourth Proportional to 21,343.40, 32,015.10 and 19,229.30

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Solution

The fourth proportional to 21,343.40, 32,015.10 and 19,229.30 is: 28,843.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.40 : 32,015.10 = 19,229.30 : x
  2. Step 2: Convert to fraction form
    21,343.40/32,015.10 = 19,229.30/x
  3. Step 3: Cross multiply
    21,343.40x = 32,015.10 × 19,229.30
  4. Step 4: Simplify right side
    21,343.40x = 615,627,962.43
  5. Step 5: Solve for x
    x = 615,627,962.43/21,343.40
  6. Step 6: Final answer
    x = 28,843.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.