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Finding the Fourth Proportional to 21,026.64, 29,007.64 and 12,072.08

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Solution

The fourth proportional to 21,026.64, 29,007.64 and 12,072.08 is: 16,654.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.64 : 29,007.64 = 12,072.08 : x
  2. Step 2: Convert to fraction form
    21,026.64/29,007.64 = 12,072.08/x
  3. Step 3: Cross multiply
    21,026.64x = 29,007.64 × 12,072.08
  4. Step 4: Simplify right side
    21,026.64x = 350,182,550.69
  5. Step 5: Solve for x
    x = 350,182,550.69/21,026.64
  6. Step 6: Final answer
    x = 16,654.23

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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.