Home / 22,231.40-30,679.93-12,160.43

Finding the Fourth Proportional to 22,231.40, 30,679.93 and 12,160.43

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Solution

The fourth proportional to 22,231.40, 30,679.93 and 12,160.43 is: 16,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,231.40 : 30,679.93 = 12,160.43 : x
  2. Step 2: Convert to fraction form
    22,231.40/30,679.93 = 12,160.43/x
  3. Step 3: Cross multiply
    22,231.40x = 30,679.93 × 12,160.43
  4. Step 4: Simplify right side
    22,231.40x = 373,081,118.02
  5. Step 5: Solve for x
    x = 373,081,118.02/22,231.40
  6. Step 6: Final answer
    x = 16,781.72

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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.