Home / 19,105.20-28,631.88-10,781.10

Finding the Fourth Proportional to 19,105.20, 28,631.88 and 10,781.10

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Solution

The fourth proportional to 19,105.20, 28,631.88 and 10,781.10 is: 16,157.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,105.20 : 28,631.88 = 10,781.10 : x
  2. Step 2: Convert to fraction form
    19,105.20/28,631.88 = 10,781.10/x
  3. Step 3: Cross multiply
    19,105.20x = 28,631.88 × 10,781.10
  4. Step 4: Simplify right side
    19,105.20x = 308,683,161.47
  5. Step 5: Solve for x
    x = 308,683,161.47/19,105.20
  6. Step 6: Final answer
    x = 16,157.02

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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.