Home / 21,600.81-32,328.03-13,286.10

Finding the Fourth Proportional to 21,600.81, 32,328.03 and 13,286.10

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Solution

The fourth proportional to 21,600.81, 32,328.03 and 13,286.10 is: 19,884.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.81 : 32,328.03 = 13,286.10 : x
  2. Step 2: Convert to fraction form
    21,600.81/32,328.03 = 13,286.10/x
  3. Step 3: Cross multiply
    21,600.81x = 32,328.03 × 13,286.10
  4. Step 4: Simplify right side
    21,600.81x = 429,513,439.38
  5. Step 5: Solve for x
    x = 429,513,439.38/21,600.81
  6. Step 6: Final answer
    x = 19,884.14

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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.