Home / 39,985.88-59,961.33-21,261.38

Finding the Fourth Proportional to 39,985.88, 59,961.33 and 21,261.38

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Solution

The fourth proportional to 39,985.88, 59,961.33 and 21,261.38 is: 31,882.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.88 : 59,961.33 = 21,261.38 : x
  2. Step 2: Convert to fraction form
    39,985.88/59,961.33 = 21,261.38/x
  3. Step 3: Cross multiply
    39,985.88x = 59,961.33 × 21,261.38
  4. Step 4: Simplify right side
    39,985.88x = 1,274,860,322.63
  5. Step 5: Solve for x
    x = 1,274,860,322.63/39,985.88
  6. Step 6: Final answer
    x = 31,882.77

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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.