Home / 21,408.75-32,115.15-7,368.21

Finding the Fourth Proportional to 21,408.75, 32,115.15 and 7,368.21

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Solution

The fourth proportional to 21,408.75, 32,115.15 and 7,368.21 is: 11,053.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.75 : 32,115.15 = 7,368.21 : x
  2. Step 2: Convert to fraction form
    21,408.75/32,115.15 = 7,368.21/x
  3. Step 3: Cross multiply
    21,408.75x = 32,115.15 × 7,368.21
  4. Step 4: Simplify right side
    21,408.75x = 236,631,169.38
  5. Step 5: Solve for x
    x = 236,631,169.38/21,408.75
  6. Step 6: Final answer
    x = 11,053.01

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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.