Home / 22,260.45-30,718.85-12,188.78

Finding the Fourth Proportional to 22,260.45, 30,718.85 and 12,188.78

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Solution

The fourth proportional to 22,260.45, 30,718.85 and 12,188.78 is: 16,820.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,260.45 : 30,718.85 = 12,188.78 : x
  2. Step 2: Convert to fraction form
    22,260.45/30,718.85 = 12,188.78/x
  3. Step 3: Cross multiply
    22,260.45x = 30,718.85 × 12,188.78
  4. Step 4: Simplify right side
    22,260.45x = 374,425,089.96
  5. Step 5: Solve for x
    x = 374,425,089.96/22,260.45
  6. Step 6: Final answer
    x = 16,820.19

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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.