Home / 21,921.35-32,885.90-7,127.66

Finding the Fourth Proportional to 21,921.35, 32,885.90 and 7,127.66

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Solution

The fourth proportional to 21,921.35, 32,885.90 and 7,127.66 is: 10,692.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.35 : 32,885.90 = 7,127.66 : x
  2. Step 2: Convert to fraction form
    21,921.35/32,885.90 = 7,127.66/x
  3. Step 3: Cross multiply
    21,921.35x = 32,885.90 × 7,127.66
  4. Step 4: Simplify right side
    21,921.35x = 234,399,313.93
  5. Step 5: Solve for x
    x = 234,399,313.93/21,921.35
  6. Step 6: Final answer
    x = 10,692.74

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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.