Home / 21,851.08-32,747.34-20,451.40

Finding the Fourth Proportional to 21,851.08, 32,747.34 and 20,451.40

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Solution

The fourth proportional to 21,851.08, 32,747.34 and 20,451.40 is: 30,649.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,851.08 : 32,747.34 = 20,451.40 : x
  2. Step 2: Convert to fraction form
    21,851.08/32,747.34 = 20,451.40/x
  3. Step 3: Cross multiply
    21,851.08x = 32,747.34 × 20,451.40
  4. Step 4: Simplify right side
    21,851.08x = 669,728,949.28
  5. Step 5: Solve for x
    x = 669,728,949.28/21,851.08
  6. Step 6: Final answer
    x = 30,649.70

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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.