Home / 19,487.28-29,350.74-18,118.44

Finding the Fourth Proportional to 19,487.28, 29,350.74 and 18,118.44

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Solution

The fourth proportional to 19,487.28, 29,350.74 and 18,118.44 is: 27,289.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,487.28 : 29,350.74 = 18,118.44 : x
  2. Step 2: Convert to fraction form
    19,487.28/29,350.74 = 18,118.44/x
  3. Step 3: Cross multiply
    19,487.28x = 29,350.74 × 18,118.44
  4. Step 4: Simplify right side
    19,487.28x = 531,789,621.65
  5. Step 5: Solve for x
    x = 531,789,621.65/19,487.28
  6. Step 6: Final answer
    x = 27,289.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.