Home / 21,180.94-31,750.75-10,084.65

Finding the Fourth Proportional to 21,180.94, 31,750.75 and 10,084.65

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Solution

The fourth proportional to 21,180.94, 31,750.75 and 10,084.65 is: 15,117.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.94 : 31,750.75 = 10,084.65 : x
  2. Step 2: Convert to fraction form
    21,180.94/31,750.75 = 10,084.65/x
  3. Step 3: Cross multiply
    21,180.94x = 31,750.75 × 10,084.65
  4. Step 4: Simplify right side
    21,180.94x = 320,195,042.23
  5. Step 5: Solve for x
    x = 320,195,042.23/21,180.94
  6. Step 6: Final answer
    x = 15,117.13

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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.