Home / 39,807.22-54,937.29-21,905.62

Finding the Fourth Proportional to 39,807.22, 54,937.29 and 21,905.62

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Solution

The fourth proportional to 39,807.22, 54,937.29 and 21,905.62 is: 30,231.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,807.22 : 54,937.29 = 21,905.62 : x
  2. Step 2: Convert to fraction form
    39,807.22/54,937.29 = 21,905.62/x
  3. Step 3: Cross multiply
    39,807.22x = 54,937.29 × 21,905.62
  4. Step 4: Simplify right side
    39,807.22x = 1,203,435,398.57
  5. Step 5: Solve for x
    x = 1,203,435,398.57/39,807.22
  6. Step 6: Final answer
    x = 30,231.59

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1.5x scale

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.