Home / 39,756.79-54,865.38-21,852.25

Finding the Fourth Proportional to 39,756.79, 54,865.38 and 21,852.25

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Solution

The fourth proportional to 39,756.79, 54,865.38 and 21,852.25 is: 30,156.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.79 : 54,865.38 = 21,852.25 : x
  2. Step 2: Convert to fraction form
    39,756.79/54,865.38 = 21,852.25/x
  3. Step 3: Cross multiply
    39,756.79x = 54,865.38 × 21,852.25
  4. Step 4: Simplify right side
    39,756.79x = 1,198,932,000.11
  5. Step 5: Solve for x
    x = 1,198,932,000.11/39,756.79
  6. Step 6: Final answer
    x = 30,156.66

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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.