Home / 30,561.20-45,754.32-18,795.12

Finding the Fourth Proportional to 30,561.20, 45,754.32 and 18,795.12

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Solution

The fourth proportional to 30,561.20, 45,754.32 and 18,795.12 is: 28,138.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,561.20 : 45,754.32 = 18,795.12 : x
  2. Step 2: Convert to fraction form
    30,561.20/45,754.32 = 18,795.12/x
  3. Step 3: Cross multiply
    30,561.20x = 45,754.32 × 18,795.12
  4. Step 4: Simplify right side
    30,561.20x = 859,957,934.92
  5. Step 5: Solve for x
    x = 859,957,934.92/30,561.20
  6. Step 6: Final answer
    x = 28,138.88

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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.