Home / 19,210.47-28,815.70-5,170.53

Finding the Fourth Proportional to 19,210.47, 28,815.70 and 5,170.53

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Solution

The fourth proportional to 19,210.47, 28,815.70 and 5,170.53 is: 7,755.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.47 : 28,815.70 = 5,170.53 : x
  2. Step 2: Convert to fraction form
    19,210.47/28,815.70 = 5,170.53/x
  3. Step 3: Cross multiply
    19,210.47x = 28,815.70 × 5,170.53
  4. Step 4: Simplify right side
    19,210.47x = 148,992,297.24
  5. Step 5: Solve for x
    x = 148,992,297.24/19,210.47
  6. Step 6: Final answer
    x = 7,755.79

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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.