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Finding the Fourth Proportional to 39,408.40, 59,015.40 and 26,189.20

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Solution

The fourth proportional to 39,408.40, 59,015.40 and 26,189.20 is: 39,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.40 : 59,015.40 = 26,189.20 : x
  2. Step 2: Convert to fraction form
    39,408.40/59,015.40 = 26,189.20/x
  3. Step 3: Cross multiply
    39,408.40x = 59,015.40 × 26,189.20
  4. Step 4: Simplify right side
    39,408.40x = 1,545,566,113.68
  5. Step 5: Solve for x
    x = 1,545,566,113.68/39,408.40
  6. Step 6: Final answer
    x = 39,219.20

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1.5x scale

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.