Home / 19,176.75-28,765.13-5,325.75

Finding the Fourth Proportional to 19,176.75, 28,765.13 and 5,325.75

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Solution

The fourth proportional to 19,176.75, 28,765.13 and 5,325.75 is: 7,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176.75 : 28,765.13 = 5,325.75 : x
  2. Step 2: Convert to fraction form
    19,176.75/28,765.13 = 5,325.75/x
  3. Step 3: Cross multiply
    19,176.75x = 28,765.13 × 5,325.75
  4. Step 4: Simplify right side
    19,176.75x = 153,195,864.47
  5. Step 5: Solve for x
    x = 153,195,864.47/19,176.75
  6. Step 6: Final answer
    x = 7,988.63

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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.