Home / 18,220.20-27,338.82-7,124.02

Finding the Fourth Proportional to 18,220.20, 27,338.82 and 7,124.02

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Solution

The fourth proportional to 18,220.20, 27,338.82 and 7,124.02 is: 10,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.20 : 27,338.82 = 7,124.02 : x
  2. Step 2: Convert to fraction form
    18,220.20/27,338.82 = 7,124.02/x
  3. Step 3: Cross multiply
    18,220.20x = 27,338.82 × 7,124.02
  4. Step 4: Simplify right side
    18,220.20x = 194,762,300.46
  5. Step 5: Solve for x
    x = 194,762,300.46/18,220.20
  6. Step 6: Final answer
    x = 10,689.36

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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.