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Finding the Fourth Proportional to 21,633.36, 29,851.08 and 13,248.08

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Solution

The fourth proportional to 21,633.36, 29,851.08 and 13,248.08 is: 18,280.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,633.36 : 29,851.08 = 13,248.08 : x
  2. Step 2: Convert to fraction form
    21,633.36/29,851.08 = 13,248.08/x
  3. Step 3: Cross multiply
    21,633.36x = 29,851.08 × 13,248.08
  4. Step 4: Simplify right side
    21,633.36x = 395,469,495.93
  5. Step 5: Solve for x
    x = 395,469,495.93/21,633.36
  6. Step 6: Final answer
    x = 18,280.54

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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.