Home / 19,989.15-29,983.71-10,131.24

Finding the Fourth Proportional to 19,989.15, 29,983.71 and 10,131.24

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Solution

The fourth proportional to 19,989.15, 29,983.71 and 10,131.24 is: 15,196.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.15 : 29,983.71 = 10,131.24 : x
  2. Step 2: Convert to fraction form
    19,989.15/29,983.71 = 10,131.24/x
  3. Step 3: Cross multiply
    19,989.15x = 29,983.71 × 10,131.24
  4. Step 4: Simplify right side
    19,989.15x = 303,772,162.10
  5. Step 5: Solve for x
    x = 303,772,162.10/19,989.15
  6. Step 6: Final answer
    x = 15,196.85

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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.