Home / 15,388.25-21,235.73-8,314.66

Finding the Fourth Proportional to 15,388.25, 21,235.73 and 8,314.66

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Solution

The fourth proportional to 15,388.25, 21,235.73 and 8,314.66 is: 11,474.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.25 : 21,235.73 = 8,314.66 : x
  2. Step 2: Convert to fraction form
    15,388.25/21,235.73 = 8,314.66/x
  3. Step 3: Cross multiply
    15,388.25x = 21,235.73 × 8,314.66
  4. Step 4: Simplify right side
    15,388.25x = 176,567,780.14
  5. Step 5: Solve for x
    x = 176,567,780.14/15,388.25
  6. Step 6: Final answer
    x = 11,474.19

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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.