Home / 18,753.06-28,136.55-8,763.45

Finding the Fourth Proportional to 18,753.06, 28,136.55 and 8,763.45

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Solution

The fourth proportional to 18,753.06, 28,136.55 and 8,763.45 is: 13,148.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.06 : 28,136.55 = 8,763.45 : x
  2. Step 2: Convert to fraction form
    18,753.06/28,136.55 = 8,763.45/x
  3. Step 3: Cross multiply
    18,753.06x = 28,136.55 × 8,763.45
  4. Step 4: Simplify right side
    18,753.06x = 246,573,249.10
  5. Step 5: Solve for x
    x = 246,573,249.10/18,753.06
  6. Step 6: Final answer
    x = 13,148.43

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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.