Home / 21,112.07-31,671.93-10,018.65

Finding the Fourth Proportional to 21,112.07, 31,671.93 and 10,018.65

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Solution

The fourth proportional to 21,112.07, 31,671.93 and 10,018.65 is: 15,029.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.07 : 31,671.93 = 10,018.65 : x
  2. Step 2: Convert to fraction form
    21,112.07/31,671.93 = 10,018.65/x
  3. Step 3: Cross multiply
    21,112.07x = 31,671.93 × 10,018.65
  4. Step 4: Simplify right side
    21,112.07x = 317,309,981.49
  5. Step 5: Solve for x
    x = 317,309,981.49/21,112.07
  6. Step 6: Final answer
    x = 15,029.79

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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.