Home / 28,212.32-42,318.84-12,626.72

Finding the Fourth Proportional to 28,212.32, 42,318.84 and 12,626.72

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Solution

The fourth proportional to 28,212.32, 42,318.84 and 12,626.72 is: 18,940.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.32 : 42,318.84 = 12,626.72 : x
  2. Step 2: Convert to fraction form
    28,212.32/42,318.84 = 12,626.72/x
  3. Step 3: Cross multiply
    28,212.32x = 42,318.84 × 12,626.72
  4. Step 4: Simplify right side
    28,212.32x = 534,348,143.40
  5. Step 5: Solve for x
    x = 534,348,143.40/28,212.32
  6. Step 6: Final answer
    x = 18,940.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.