Home / 39,241.32-58,847.40-12,939

Finding the Fourth Proportional to 39,241.32, 58,847.40 and 12,939

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Solution

The fourth proportional to 39,241.32, 58,847.40 and 12,939 is: 19,403.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,241.32 : 58,847.40 = 12,939 : x
  2. Step 2: Convert to fraction form
    39,241.32/58,847.40 = 12,939/x
  3. Step 3: Cross multiply
    39,241.32x = 58,847.40 × 12,939
  4. Step 4: Simplify right side
    39,241.32x = 761,426,508.60
  5. Step 5: Solve for x
    x = 761,426,508.60/39,241.32
  6. Step 6: Final answer
    x = 19,403.69

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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.