Home / 28,236.60-42,363.36-8,515.80

Finding the Fourth Proportional to 28,236.60, 42,363.36 and 8,515.80

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Solution

The fourth proportional to 28,236.60, 42,363.36 and 8,515.80 is: 12,776.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.60 : 42,363.36 = 8,515.80 : x
  2. Step 2: Convert to fraction form
    28,236.60/42,363.36 = 8,515.80/x
  3. Step 3: Cross multiply
    28,236.60x = 42,363.36 × 8,515.80
  4. Step 4: Simplify right side
    28,236.60x = 360,757,901.09
  5. Step 5: Solve for x
    x = 360,757,901.09/28,236.60
  6. Step 6: Final answer
    x = 12,776.25

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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.