Home / 28,856.40-43,252.20-12,213.60

Finding the Fourth Proportional to 28,856.40, 43,252.20 and 12,213.60

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Solution

The fourth proportional to 28,856.40, 43,252.20 and 12,213.60 is: 18,306.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,856.40 : 43,252.20 = 12,213.60 : x
  2. Step 2: Convert to fraction form
    28,856.40/43,252.20 = 12,213.60/x
  3. Step 3: Cross multiply
    28,856.40x = 43,252.20 × 12,213.60
  4. Step 4: Simplify right side
    28,856.40x = 528,265,069.92
  5. Step 5: Solve for x
    x = 528,265,069.92/28,856.40
  6. Step 6: Final answer
    x = 18,306.69

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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.