Home / 21,778.32-30,055.92-12,349.92

Finding the Fourth Proportional to 21,778.32, 30,055.92 and 12,349.92

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Solution

The fourth proportional to 21,778.32, 30,055.92 and 12,349.92 is: 17,043.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,778.32 : 30,055.92 = 12,349.92 : x
  2. Step 2: Convert to fraction form
    21,778.32/30,055.92 = 12,349.92/x
  3. Step 3: Cross multiply
    21,778.32x = 30,055.92 × 12,349.92
  4. Step 4: Simplify right side
    21,778.32x = 371,188,207.53
  5. Step 5: Solve for x
    x = 371,188,207.53/21,778.32
  6. Step 6: Final answer
    x = 17,043.93

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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.