Home / 15,456.78-21,314.32-13,226.04

Finding the Fourth Proportional to 15,456.78, 21,314.32 and 13,226.04

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Solution

The fourth proportional to 15,456.78, 21,314.32 and 13,226.04 is: 18,238.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.78 : 21,314.32 = 13,226.04 : x
  2. Step 2: Convert to fraction form
    15,456.78/21,314.32 = 13,226.04/x
  3. Step 3: Cross multiply
    15,456.78x = 21,314.32 × 13,226.04
  4. Step 4: Simplify right side
    15,456.78x = 281,904,048.89
  5. Step 5: Solve for x
    x = 281,904,048.89/15,456.78
  6. Step 6: Final answer
    x = 18,238.21

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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.