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Finding the Fourth Proportional to 26,641.80, 39,892.30 and 21,352.20

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Solution

The fourth proportional to 26,641.80, 39,892.30 and 21,352.20 is: 31,971.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,641.80 : 39,892.30 = 21,352.20 : x
  2. Step 2: Convert to fraction form
    26,641.80/39,892.30 = 21,352.20/x
  3. Step 3: Cross multiply
    26,641.80x = 39,892.30 × 21,352.20
  4. Step 4: Simplify right side
    26,641.80x = 851,788,368.06
  5. Step 5: Solve for x
    x = 851,788,368.06/26,641.80
  6. Step 6: Final answer
    x = 31,971.88

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1.5x scale

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.