Home / 21,252.47-31,878.66-10,125.41

Finding the Fourth Proportional to 21,252.47, 31,878.66 and 10,125.41

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Solution

The fourth proportional to 21,252.47, 31,878.66 and 10,125.41 is: 15,188.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.47 : 31,878.66 = 10,125.41 : x
  2. Step 2: Convert to fraction form
    21,252.47/31,878.66 = 10,125.41/x
  3. Step 3: Cross multiply
    21,252.47x = 31,878.66 × 10,125.41
  4. Step 4: Simplify right side
    21,252.47x = 322,784,502.75
  5. Step 5: Solve for x
    x = 322,784,502.75/21,252.47
  6. Step 6: Final answer
    x = 15,188.09

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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.