Home / 28,218.70-42,328.41-19,451.26

Finding the Fourth Proportional to 28,218.70, 42,328.41 and 19,451.26

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Solution

The fourth proportional to 28,218.70, 42,328.41 and 19,451.26 is: 29,177.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.70 : 42,328.41 = 19,451.26 : x
  2. Step 2: Convert to fraction form
    28,218.70/42,328.41 = 19,451.26/x
  3. Step 3: Cross multiply
    28,218.70x = 42,328.41 × 19,451.26
  4. Step 4: Simplify right side
    28,218.70x = 823,340,908.30
  5. Step 5: Solve for x
    x = 823,340,908.30/28,218.70
  6. Step 6: Final answer
    x = 29,177.14

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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.