Home / 21,396.05-29,516.59-13,844.81

Finding the Fourth Proportional to 21,396.05, 29,516.59 and 13,844.81

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Solution

The fourth proportional to 21,396.05, 29,516.59 and 13,844.81 is: 19,099.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.05 : 29,516.59 = 13,844.81 : x
  2. Step 2: Convert to fraction form
    21,396.05/29,516.59 = 13,844.81/x
  3. Step 3: Cross multiply
    21,396.05x = 29,516.59 × 13,844.81
  4. Step 4: Simplify right side
    21,396.05x = 408,651,671.50
  5. Step 5: Solve for x
    x = 408,651,671.50/21,396.05
  6. Step 6: Final answer
    x = 19,099.40

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1.5x scale

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.