Home / 39,381.21-59,100.98-20,665.89

Finding the Fourth Proportional to 39,381.21, 59,100.98 and 20,665.89

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Solution

The fourth proportional to 39,381.21, 59,100.98 and 20,665.89 is: 31,014.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,381.21 : 59,100.98 = 20,665.89 : x
  2. Step 2: Convert to fraction form
    39,381.21/59,100.98 = 20,665.89/x
  3. Step 3: Cross multiply
    39,381.21x = 59,100.98 × 20,665.89
  4. Step 4: Simplify right side
    39,381.21x = 1,221,374,248.24
  5. Step 5: Solve for x
    x = 1,221,374,248.24/39,381.21
  6. Step 6: Final answer
    x = 31,014.14

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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.