Home / 39,756.18-54,864.57-21,851.66

Finding the Fourth Proportional to 39,756.18, 54,864.57 and 21,851.66

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Solution

The fourth proportional to 39,756.18, 54,864.57 and 21,851.66 is: 30,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.18 : 54,864.57 = 21,851.66 : x
  2. Step 2: Convert to fraction form
    39,756.18/54,864.57 = 21,851.66/x
  3. Step 3: Cross multiply
    39,756.18x = 54,864.57 × 21,851.66
  4. Step 4: Simplify right side
    39,756.18x = 1,198,881,929.69
  5. Step 5: Solve for x
    x = 1,198,881,929.69/39,756.18
  6. Step 6: Final answer
    x = 30,155.86

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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.