Home / 18,888.91-28,330.27-5,558.78

Finding the Fourth Proportional to 18,888.91, 28,330.27 and 5,558.78

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Solution

The fourth proportional to 18,888.91, 28,330.27 and 5,558.78 is: 8,337.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.91 : 28,330.27 = 5,558.78 : x
  2. Step 2: Convert to fraction form
    18,888.91/28,330.27 = 5,558.78/x
  3. Step 3: Cross multiply
    18,888.91x = 28,330.27 × 5,558.78
  4. Step 4: Simplify right side
    18,888.91x = 157,481,710.48
  5. Step 5: Solve for x
    x = 157,481,710.48/18,888.91
  6. Step 6: Final answer
    x = 8,337.26

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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.