Home / 20,129.72-30,145.16-16,598.12

Finding the Fourth Proportional to 20,129.72, 30,145.16 and 16,598.12

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Solution

The fourth proportional to 20,129.72, 30,145.16 and 16,598.12 is: 24,856.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.72 : 30,145.16 = 16,598.12 : x
  2. Step 2: Convert to fraction form
    20,129.72/30,145.16 = 16,598.12/x
  3. Step 3: Cross multiply
    20,129.72x = 30,145.16 × 16,598.12
  4. Step 4: Simplify right side
    20,129.72x = 500,352,873.87
  5. Step 5: Solve for x
    x = 500,352,873.87/20,129.72
  6. Step 6: Final answer
    x = 24,856.43

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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.