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Finding the Fourth Proportional to 22,676.80, 34,072.80 and 20,142.40

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Solution

The fourth proportional to 22,676.80, 34,072.80 and 20,142.40 is: 30,264.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,676.80 : 34,072.80 = 20,142.40 : x
  2. Step 2: Convert to fraction form
    22,676.80/34,072.80 = 20,142.40/x
  3. Step 3: Cross multiply
    22,676.80x = 34,072.80 × 20,142.40
  4. Step 4: Simplify right side
    22,676.80x = 686,307,966.72
  5. Step 5: Solve for x
    x = 686,307,966.72/22,676.80
  6. Step 6: Final answer
    x = 30,264.76

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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.