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Finding the Fourth Proportional to 17,374.80, 26,057.40 and 6,987.60

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Solution

The fourth proportional to 17,374.80, 26,057.40 and 6,987.60 is: 10,479.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,374.80 : 26,057.40 = 6,987.60 : x
  2. Step 2: Convert to fraction form
    17,374.80/26,057.40 = 6,987.60/x
  3. Step 3: Cross multiply
    17,374.80x = 26,057.40 × 6,987.60
  4. Step 4: Simplify right side
    17,374.80x = 182,078,688.24
  5. Step 5: Solve for x
    x = 182,078,688.24/17,374.80
  6. Step 6: Final answer
    x = 10,479.47

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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.