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Finding the Fourth Proportional to 21,588.72, 32,383.88 and 7,737.72

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Solution

The fourth proportional to 21,588.72, 32,383.88 and 7,737.72 is: 11,606.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,588.72 : 32,383.88 = 7,737.72 : x
  2. Step 2: Convert to fraction form
    21,588.72/32,383.88 = 7,737.72/x
  3. Step 3: Cross multiply
    21,588.72x = 32,383.88 × 7,737.72
  4. Step 4: Simplify right side
    21,588.72x = 250,577,395.95
  5. Step 5: Solve for x
    x = 250,577,395.95/21,588.72
  6. Step 6: Final answer
    x = 11,606.87

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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.