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Finding the Fourth Proportional to 39,000.88, 53,821.22 and 21,095.88

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Solution

The fourth proportional to 39,000.88, 53,821.22 and 21,095.88 is: 29,112.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,000.88 : 53,821.22 = 21,095.88 : x
  2. Step 2: Convert to fraction form
    39,000.88/53,821.22 = 21,095.88/x
  3. Step 3: Cross multiply
    39,000.88x = 53,821.22 × 21,095.88
  4. Step 4: Simplify right side
    39,000.88x = 1,135,405,998.57
  5. Step 5: Solve for x
    x = 1,135,405,998.57/39,000.88
  6. Step 6: Final answer
    x = 29,112.32

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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.