Home / 19,972.86-29,959.22-5,180.51

Finding the Fourth Proportional to 19,972.86, 29,959.22 and 5,180.51

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Solution

The fourth proportional to 19,972.86, 29,959.22 and 5,180.51 is: 7,770.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972.86 : 29,959.22 = 5,180.51 : x
  2. Step 2: Convert to fraction form
    19,972.86/29,959.22 = 5,180.51/x
  3. Step 3: Cross multiply
    19,972.86x = 29,959.22 × 5,180.51
  4. Step 4: Simplify right side
    19,972.86x = 155,203,863.10
  5. Step 5: Solve for x
    x = 155,203,863.10/19,972.86
  6. Step 6: Final answer
    x = 7,770.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.