Home / 20,218.54-30,323.63-5,423.95

Finding the Fourth Proportional to 20,218.54, 30,323.63 and 5,423.95

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Solution

The fourth proportional to 20,218.54, 30,323.63 and 5,423.95 is: 8,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.54 : 30,323.63 = 5,423.95 : x
  2. Step 2: Convert to fraction form
    20,218.54/30,323.63 = 5,423.95/x
  3. Step 3: Cross multiply
    20,218.54x = 30,323.63 × 5,423.95
  4. Step 4: Simplify right side
    20,218.54x = 164,473,674.20
  5. Step 5: Solve for x
    x = 164,473,674.20/20,218.54
  6. Step 6: Final answer
    x = 8,134.80

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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.