Home / 19,109.76-28,668.24-5,959.20

Finding the Fourth Proportional to 19,109.76, 28,668.24 and 5,959.20

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Solution

The fourth proportional to 19,109.76, 28,668.24 and 5,959.20 is: 8,939.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.76 : 28,668.24 = 5,959.20 : x
  2. Step 2: Convert to fraction form
    19,109.76/28,668.24 = 5,959.20/x
  3. Step 3: Cross multiply
    19,109.76x = 28,668.24 × 5,959.20
  4. Step 4: Simplify right side
    19,109.76x = 170,839,775.81
  5. Step 5: Solve for x
    x = 170,839,775.81/19,109.76
  6. Step 6: Final answer
    x = 8,939.92

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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.