Home / 12,518.87-18,781.02-3,753.09

Finding the Fourth Proportional to 12,518.87, 18,781.02 and 3,753.09

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Solution

The fourth proportional to 12,518.87, 18,781.02 and 3,753.09 is: 5,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.87 : 18,781.02 = 3,753.09 : x
  2. Step 2: Convert to fraction form
    12,518.87/18,781.02 = 3,753.09/x
  3. Step 3: Cross multiply
    12,518.87x = 18,781.02 × 3,753.09
  4. Step 4: Simplify right side
    12,518.87x = 70,486,858.35
  5. Step 5: Solve for x
    x = 70,486,858.35/12,518.87
  6. Step 6: Final answer
    x = 5,630.45

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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.