Home / 18,760.08-28,145.34-5,612.88

Finding the Fourth Proportional to 18,760.08, 28,145.34 and 5,612.88

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Solution

The fourth proportional to 18,760.08, 28,145.34 and 5,612.88 is: 8,420.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.08 : 28,145.34 = 5,612.88 : x
  2. Step 2: Convert to fraction form
    18,760.08/28,145.34 = 5,612.88/x
  3. Step 3: Cross multiply
    18,760.08x = 28,145.34 × 5,612.88
  4. Step 4: Simplify right side
    18,760.08x = 157,976,415.98
  5. Step 5: Solve for x
    x = 157,976,415.98/18,760.08
  6. Step 6: Final answer
    x = 8,420.88

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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.