Home / 21,561.60-29,716.16-15,962.88

Finding the Fourth Proportional to 21,561.60, 29,716.16 and 15,962.88

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Solution

The fourth proportional to 21,561.60, 29,716.16 and 15,962.88 is: 22,000.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.60 : 29,716.16 = 15,962.88 : x
  2. Step 2: Convert to fraction form
    21,561.60/29,716.16 = 15,962.88/x
  3. Step 3: Cross multiply
    21,561.60x = 29,716.16 × 15,962.88
  4. Step 4: Simplify right side
    21,561.60x = 474,355,496.14
  5. Step 5: Solve for x
    x = 474,355,496.14/21,561.60
  6. Step 6: Final answer
    x = 22,000.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.