Home / 20,178.72-30,248.64-6,324.48

Finding the Fourth Proportional to 20,178.72, 30,248.64 and 6,324.48

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Solution

The fourth proportional to 20,178.72, 30,248.64 and 6,324.48 is: 9,480.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.72 : 30,248.64 = 6,324.48 : x
  2. Step 2: Convert to fraction form
    20,178.72/30,248.64 = 6,324.48/x
  3. Step 3: Cross multiply
    20,178.72x = 30,248.64 × 6,324.48
  4. Step 4: Simplify right side
    20,178.72x = 191,306,918.71
  5. Step 5: Solve for x
    x = 191,306,918.71/20,178.72
  6. Step 6: Final answer
    x = 9,480.63

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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.