Home / 39,885.21-59,845.10-21,395.61

Finding the Fourth Proportional to 39,885.21, 59,845.10 and 21,395.61

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Solution

The fourth proportional to 39,885.21, 59,845.10 and 21,395.61 is: 32,102.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,885.21 : 59,845.10 = 21,395.61 : x
  2. Step 2: Convert to fraction form
    39,885.21/59,845.10 = 21,395.61/x
  3. Step 3: Cross multiply
    39,885.21x = 59,845.10 × 21,395.61
  4. Step 4: Simplify right side
    39,885.21x = 1,280,422,313.03
  5. Step 5: Solve for x
    x = 1,280,422,313.03/39,885.21
  6. Step 6: Final answer
    x = 32,102.68

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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.