Home / 39,587.21-59,389.45-13,291.25

Finding the Fourth Proportional to 39,587.21, 59,389.45 and 13,291.25

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Solution

The fourth proportional to 39,587.21, 59,389.45 and 13,291.25 is: 19,939.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,587.21 : 59,389.45 = 13,291.25 : x
  2. Step 2: Convert to fraction form
    39,587.21/59,389.45 = 13,291.25/x
  3. Step 3: Cross multiply
    39,587.21x = 59,389.45 × 13,291.25
  4. Step 4: Simplify right side
    39,587.21x = 789,360,142.56
  5. Step 5: Solve for x
    x = 789,360,142.56/39,587.21
  6. Step 6: Final answer
    x = 19,939.78

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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.