Home / 21,408.77-32,091.08-8,936.05

Finding the Fourth Proportional to 21,408.77, 32,091.08 and 8,936.05

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Solution

The fourth proportional to 21,408.77, 32,091.08 and 8,936.05 is: 13,394.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.77 : 32,091.08 = 8,936.05 : x
  2. Step 2: Convert to fraction form
    21,408.77/32,091.08 = 8,936.05/x
  3. Step 3: Cross multiply
    21,408.77x = 32,091.08 × 8,936.05
  4. Step 4: Simplify right side
    21,408.77x = 286,767,598.00
  5. Step 5: Solve for x
    x = 286,767,598.00/21,408.77
  6. Step 6: Final answer
    x = 13,394.87

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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.