Home / 39,280.36-54,207-21,375.36

Finding the Fourth Proportional to 39,280.36, 54,207 and 21,375.36

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Solution

The fourth proportional to 39,280.36, 54,207 and 21,375.36 is: 29,498.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,280.36 : 54,207 = 21,375.36 : x
  2. Step 2: Convert to fraction form
    39,280.36/54,207 = 21,375.36/x
  3. Step 3: Cross multiply
    39,280.36x = 54,207 × 21,375.36
  4. Step 4: Simplify right side
    39,280.36x = 1,158,694,139.52
  5. Step 5: Solve for x
    x = 1,158,694,139.52/39,280.36
  6. Step 6: Final answer
    x = 29,498.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.