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Finding the Fourth Proportional to 21,593.68, 32,396.88 and 9,118.96

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Solution

The fourth proportional to 21,593.68, 32,396.88 and 9,118.96 is: 13,681.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,593.68 : 32,396.88 = 9,118.96 : x
  2. Step 2: Convert to fraction form
    21,593.68/32,396.88 = 9,118.96/x
  3. Step 3: Cross multiply
    21,593.68x = 32,396.88 × 9,118.96
  4. Step 4: Simplify right side
    21,593.68x = 295,425,852.84
  5. Step 5: Solve for x
    x = 295,425,852.84/21,593.68
  6. Step 6: Final answer
    x = 13,681.13

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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.