Home / 28,480.32-39,294.72-18,408.96

Finding the Fourth Proportional to 28,480.32, 39,294.72 and 18,408.96

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Solution

The fourth proportional to 28,480.32, 39,294.72 and 18,408.96 is: 25,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,480.32 : 39,294.72 = 18,408.96 : x
  2. Step 2: Convert to fraction form
    28,480.32/39,294.72 = 18,408.96/x
  3. Step 3: Cross multiply
    28,480.32x = 39,294.72 × 18,408.96
  4. Step 4: Simplify right side
    28,480.32x = 723,374,928.69
  5. Step 5: Solve for x
    x = 723,374,928.69/28,480.32
  6. Step 6: Final answer
    x = 25,399.12

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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.