Home / 20,118.03-30,178.40-5,326.76

Finding the Fourth Proportional to 20,118.03, 30,178.40 and 5,326.76

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Solution

The fourth proportional to 20,118.03, 30,178.40 and 5,326.76 is: 7,990.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.03 : 30,178.40 = 5,326.76 : x
  2. Step 2: Convert to fraction form
    20,118.03/30,178.40 = 5,326.76/x
  3. Step 3: Cross multiply
    20,118.03x = 30,178.40 × 5,326.76
  4. Step 4: Simplify right side
    20,118.03x = 160,752,916.46
  5. Step 5: Solve for x
    x = 160,752,916.46/20,118.03
  6. Step 6: Final answer
    x = 7,990.49

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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.