Home / 20,143.72-30,213.17-5,353.77

Finding the Fourth Proportional to 20,143.72, 30,213.17 and 5,353.77

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Solution

The fourth proportional to 20,143.72, 30,213.17 and 5,353.77 is: 8,030.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.72 : 30,213.17 = 5,353.77 : x
  2. Step 2: Convert to fraction form
    20,143.72/30,213.17 = 5,353.77/x
  3. Step 3: Cross multiply
    20,143.72x = 30,213.17 × 5,353.77
  4. Step 4: Simplify right side
    20,143.72x = 161,754,336.38
  5. Step 5: Solve for x
    x = 161,754,336.38/20,143.72
  6. Step 6: Final answer
    x = 8,030.02

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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.