Home / 21,058.94-31,588.46-5,476.57

Finding the Fourth Proportional to 21,058.94, 31,588.46 and 5,476.57

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Solution

The fourth proportional to 21,058.94, 31,588.46 and 5,476.57 is: 8,214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.94 : 31,588.46 = 5,476.57 : x
  2. Step 2: Convert to fraction form
    21,058.94/31,588.46 = 5,476.57/x
  3. Step 3: Cross multiply
    21,058.94x = 31,588.46 × 5,476.57
  4. Step 4: Simplify right side
    21,058.94x = 172,996,412.38
  5. Step 5: Solve for x
    x = 172,996,412.38/21,058.94
  6. Step 6: Final answer
    x = 8,214.87

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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.