Home / 13,408.79-18,438.52-11,637.32

Finding the Fourth Proportional to 13,408.79, 18,438.52 and 11,637.32

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Solution

The fourth proportional to 13,408.79, 18,438.52 and 11,637.32 is: 16,002.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.79 : 18,438.52 = 11,637.32 : x
  2. Step 2: Convert to fraction form
    13,408.79/18,438.52 = 11,637.32/x
  3. Step 3: Cross multiply
    13,408.79x = 18,438.52 × 11,637.32
  4. Step 4: Simplify right side
    13,408.79x = 214,574,919.97
  5. Step 5: Solve for x
    x = 214,574,919.97/13,408.79
  6. Step 6: Final answer
    x = 16,002.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.