Home / 22,230.34-30,678.66-12,158.18

Finding the Fourth Proportional to 22,230.34, 30,678.66 and 12,158.18

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Solution

The fourth proportional to 22,230.34, 30,678.66 and 12,158.18 is: 16,778.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,230.34 : 30,678.66 = 12,158.18 : x
  2. Step 2: Convert to fraction form
    22,230.34/30,678.66 = 12,158.18/x
  3. Step 3: Cross multiply
    22,230.34x = 30,678.66 × 12,158.18
  4. Step 4: Simplify right side
    22,230.34x = 372,996,670.44
  5. Step 5: Solve for x
    x = 372,996,670.44/22,230.34
  6. Step 6: Final answer
    x = 16,778.72

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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.