Home / 15,400.92-21,252.84-8,686.29

Finding the Fourth Proportional to 15,400.92, 21,252.84 and 8,686.29

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Solution

The fourth proportional to 15,400.92, 21,252.84 and 8,686.29 is: 11,986.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.92 : 21,252.84 = 8,686.29 : x
  2. Step 2: Convert to fraction form
    15,400.92/21,252.84 = 8,686.29/x
  3. Step 3: Cross multiply
    15,400.92x = 21,252.84 × 8,686.29
  4. Step 4: Simplify right side
    15,400.92x = 184,608,331.56
  5. Step 5: Solve for x
    x = 184,608,331.56/15,400.92
  6. Step 6: Final answer
    x = 11,986.84

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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.