Home / 13,257.72-19,870.32-9,287.04

Finding the Fourth Proportional to 13,257.72, 19,870.32 and 9,287.04

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Solution

The fourth proportional to 13,257.72, 19,870.32 and 9,287.04 is: 13,919.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.72 : 19,870.32 = 9,287.04 : x
  2. Step 2: Convert to fraction form
    13,257.72/19,870.32 = 9,287.04/x
  3. Step 3: Cross multiply
    13,257.72x = 19,870.32 × 9,287.04
  4. Step 4: Simplify right side
    13,257.72x = 184,536,456.65
  5. Step 5: Solve for x
    x = 184,536,456.65/13,257.72
  6. Step 6: Final answer
    x = 13,919.17

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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.