Home / 21,315.93-31,946.53-10,205.97

Finding the Fourth Proportional to 21,315.93, 31,946.53 and 10,205.97

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Solution

The fourth proportional to 21,315.93, 31,946.53 and 10,205.97 is: 15,295.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.93 : 31,946.53 = 10,205.97 : x
  2. Step 2: Convert to fraction form
    21,315.93/31,946.53 = 10,205.97/x
  3. Step 3: Cross multiply
    21,315.93x = 31,946.53 × 10,205.97
  4. Step 4: Simplify right side
    21,315.93x = 326,045,339.54
  5. Step 5: Solve for x
    x = 326,045,339.54/21,315.93
  6. Step 6: Final answer
    x = 15,295.85

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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.