Home / 21,401.75-32,115.60-9,089.75

Finding the Fourth Proportional to 21,401.75, 32,115.60 and 9,089.75

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Solution

The fourth proportional to 21,401.75, 32,115.60 and 9,089.75 is: 13,640.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.75 : 32,115.60 = 9,089.75 : x
  2. Step 2: Convert to fraction form
    21,401.75/32,115.60 = 9,089.75/x
  3. Step 3: Cross multiply
    21,401.75x = 32,115.60 × 9,089.75
  4. Step 4: Simplify right side
    21,401.75x = 291,922,775.10
  5. Step 5: Solve for x
    x = 291,922,775.10/21,401.75
  6. Step 6: Final answer
    x = 13,640.14

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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.