Home / 20,305.50-30,423.39-18,251.16

Finding the Fourth Proportional to 20,305.50, 30,423.39 and 18,251.16

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Solution

The fourth proportional to 20,305.50, 30,423.39 and 18,251.16 is: 27,345.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.50 : 30,423.39 = 18,251.16 : x
  2. Step 2: Convert to fraction form
    20,305.50/30,423.39 = 18,251.16/x
  3. Step 3: Cross multiply
    20,305.50x = 30,423.39 × 18,251.16
  4. Step 4: Simplify right side
    20,305.50x = 555,262,158.63
  5. Step 5: Solve for x
    x = 555,262,158.63/20,305.50
  6. Step 6: Final answer
    x = 27,345.41

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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.