Home / 22,260.40-30,718.64-12,188.58

Finding the Fourth Proportional to 22,260.40, 30,718.64 and 12,188.58

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Solution

The fourth proportional to 22,260.40, 30,718.64 and 12,188.58 is: 16,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,260.40 : 30,718.64 = 12,188.58 : x
  2. Step 2: Convert to fraction form
    22,260.40/30,718.64 = 12,188.58/x
  3. Step 3: Cross multiply
    22,260.40x = 30,718.64 × 12,188.58
  4. Step 4: Simplify right side
    22,260.40x = 374,416,601.13
  5. Step 5: Solve for x
    x = 374,416,601.13/22,260.40
  6. Step 6: Final answer
    x = 16,819.85

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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.