Home / 21,508.46-32,422.28-19,639.94

Finding the Fourth Proportional to 21,508.46, 32,422.28 and 19,639.94

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Solution

The fourth proportional to 21,508.46, 32,422.28 and 19,639.94 is: 29,605.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508.46 : 32,422.28 = 19,639.94 : x
  2. Step 2: Convert to fraction form
    21,508.46/32,422.28 = 19,639.94/x
  3. Step 3: Cross multiply
    21,508.46x = 32,422.28 × 19,639.94
  4. Step 4: Simplify right side
    21,508.46x = 636,771,647.12
  5. Step 5: Solve for x
    x = 636,771,647.12/21,508.46
  6. Step 6: Final answer
    x = 29,605.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.