Home / 13,724.72-18,940.11-7,437.09

Finding the Fourth Proportional to 13,724.72, 18,940.11 and 7,437.09

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Solution

The fourth proportional to 13,724.72, 18,940.11 and 7,437.09 is: 10,263.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.72 : 18,940.11 = 7,437.09 : x
  2. Step 2: Convert to fraction form
    13,724.72/18,940.11 = 7,437.09/x
  3. Step 3: Cross multiply
    13,724.72x = 18,940.11 × 7,437.09
  4. Step 4: Simplify right side
    13,724.72x = 140,859,387.65
  5. Step 5: Solve for x
    x = 140,859,387.65/13,724.72
  6. Step 6: Final answer
    x = 10,263.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.