Home / 39,756.71-54,864.10-21,852.47

Finding the Fourth Proportional to 39,756.71, 54,864.10 and 21,852.47

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Solution

The fourth proportional to 39,756.71, 54,864.10 and 21,852.47 is: 30,156.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.71 : 54,864.10 = 21,852.47 : x
  2. Step 2: Convert to fraction form
    39,756.71/54,864.10 = 21,852.47/x
  3. Step 3: Cross multiply
    39,756.71x = 54,864.10 × 21,852.47
  4. Step 4: Simplify right side
    39,756.71x = 1,198,916,099.33
  5. Step 5: Solve for x
    x = 1,198,916,099.33/39,756.71
  6. Step 6: Final answer
    x = 30,156.32

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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.