Home / 18,777.80-28,170.35-5,629.07

Finding the Fourth Proportional to 18,777.80, 28,170.35 and 5,629.07

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Solution

The fourth proportional to 18,777.80, 28,170.35 and 5,629.07 is: 8,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.80 : 28,170.35 = 5,629.07 : x
  2. Step 2: Convert to fraction form
    18,777.80/28,170.35 = 5,629.07/x
  3. Step 3: Cross multiply
    18,777.80x = 28,170.35 × 5,629.07
  4. Step 4: Simplify right side
    18,777.80x = 158,572,872.07
  5. Step 5: Solve for x
    x = 158,572,872.07/18,777.80
  6. Step 6: Final answer
    x = 8,444.70

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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.