Home / 20,219.54-30,325.12-5,424.95

Finding the Fourth Proportional to 20,219.54, 30,325.12 and 5,424.95

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Solution

The fourth proportional to 20,219.54, 30,325.12 and 5,424.95 is: 8,136.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.54 : 30,325.12 = 5,424.95 : x
  2. Step 2: Convert to fraction form
    20,219.54/30,325.12 = 5,424.95/x
  3. Step 3: Cross multiply
    20,219.54x = 30,325.12 × 5,424.95
  4. Step 4: Simplify right side
    20,219.54x = 164,512,259.74
  5. Step 5: Solve for x
    x = 164,512,259.74/20,219.54
  6. Step 6: Final answer
    x = 8,136.30

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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.