Home / 39,623.60-59,438.10-12,603.80

Finding the Fourth Proportional to 39,623.60, 59,438.10 and 12,603.80

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Solution

The fourth proportional to 39,623.60, 59,438.10 and 12,603.80 is: 18,906.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,623.60 : 59,438.10 = 12,603.80 : x
  2. Step 2: Convert to fraction form
    39,623.60/59,438.10 = 12,603.80/x
  3. Step 3: Cross multiply
    39,623.60x = 59,438.10 × 12,603.80
  4. Step 4: Simplify right side
    39,623.60x = 749,145,924.78
  5. Step 5: Solve for x
    x = 749,145,924.78/39,623.60
  6. Step 6: Final answer
    x = 18,906.56

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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.