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Finding the Fourth Proportional to 17,875.40, 26,821.85 and 7,201.31

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Solution

The fourth proportional to 17,875.40, 26,821.85 and 7,201.31 is: 10,805.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,875.40 : 26,821.85 = 7,201.31 : x
  2. Step 2: Convert to fraction form
    17,875.40/26,821.85 = 7,201.31/x
  3. Step 3: Cross multiply
    17,875.40x = 26,821.85 × 7,201.31
  4. Step 4: Simplify right side
    17,875.40x = 193,152,519.41
  5. Step 5: Solve for x
    x = 193,152,519.41/17,875.40
  6. Step 6: Final answer
    x = 10,805.49

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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.