Home / 21,974.34-32,974.65-20,187.72

Finding the Fourth Proportional to 21,974.34, 32,974.65 and 20,187.72

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Solution

The fourth proportional to 21,974.34, 32,974.65 and 20,187.72 is: 30,293.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,974.34 : 32,974.65 = 20,187.72 : x
  2. Step 2: Convert to fraction form
    21,974.34/32,974.65 = 20,187.72/x
  3. Step 3: Cross multiply
    21,974.34x = 32,974.65 × 20,187.72
  4. Step 4: Simplify right side
    21,974.34x = 665,683,001.30
  5. Step 5: Solve for x
    x = 665,683,001.30/21,974.34
  6. Step 6: Final answer
    x = 30,293.65

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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.