Home / 21,821.41-32,746.47-11,967.61

Finding the Fourth Proportional to 21,821.41, 32,746.47 and 11,967.61

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Solution

The fourth proportional to 21,821.41, 32,746.47 and 11,967.61 is: 17,959.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,821.41 : 32,746.47 = 11,967.61 : x
  2. Step 2: Convert to fraction form
    21,821.41/32,746.47 = 11,967.61/x
  3. Step 3: Cross multiply
    21,821.41x = 32,746.47 × 11,967.61
  4. Step 4: Simplify right side
    21,821.41x = 391,896,758.27
  5. Step 5: Solve for x
    x = 391,896,758.27/21,821.41
  6. Step 6: Final answer
    x = 17,959.28

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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.