Home / 19,699.47-29,540.43-7,216.20

Finding the Fourth Proportional to 19,699.47, 29,540.43 and 7,216.20

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Solution

The fourth proportional to 19,699.47, 29,540.43 and 7,216.20 is: 10,821.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,699.47 : 29,540.43 = 7,216.20 : x
  2. Step 2: Convert to fraction form
    19,699.47/29,540.43 = 7,216.20/x
  3. Step 3: Cross multiply
    19,699.47x = 29,540.43 × 7,216.20
  4. Step 4: Simplify right side
    19,699.47x = 213,169,650.97
  5. Step 5: Solve for x
    x = 213,169,650.97/19,699.47
  6. Step 6: Final answer
    x = 10,821.09

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1.5x scale

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.