Home / 39,916.88-59,874.84-13,640

Finding the Fourth Proportional to 39,916.88, 59,874.84 and 13,640

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Solution

The fourth proportional to 39,916.88, 59,874.84 and 13,640 is: 20,459.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,916.88 : 59,874.84 = 13,640 : x
  2. Step 2: Convert to fraction form
    39,916.88/59,874.84 = 13,640/x
  3. Step 3: Cross multiply
    39,916.88x = 59,874.84 × 13,640
  4. Step 4: Simplify right side
    39,916.88x = 816,692,817.60
  5. Step 5: Solve for x
    x = 816,692,817.60/39,916.88
  6. Step 6: Final answer
    x = 20,459.84

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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.