Home / 18,139.95-27,206.73-4,989.15

Finding the Fourth Proportional to 18,139.95, 27,206.73 and 4,989.15

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Solution

The fourth proportional to 18,139.95, 27,206.73 and 4,989.15 is: 7,482.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.95 : 27,206.73 = 4,989.15 : x
  2. Step 2: Convert to fraction form
    18,139.95/27,206.73 = 4,989.15/x
  3. Step 3: Cross multiply
    18,139.95x = 27,206.73 × 4,989.15
  4. Step 4: Simplify right side
    18,139.95x = 135,738,456.98
  5. Step 5: Solve for x
    x = 135,738,456.98/18,139.95
  6. Step 6: Final answer
    x = 7,482.85

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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.