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Finding the Fourth Proportional to 19,347.40, 29,008.14 and 7,657.48

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Solution

The fourth proportional to 19,347.40, 29,008.14 and 7,657.48 is: 11,481.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,347.40 : 29,008.14 = 7,657.48 : x
  2. Step 2: Convert to fraction form
    19,347.40/29,008.14 = 7,657.48/x
  3. Step 3: Cross multiply
    19,347.40x = 29,008.14 × 7,657.48
  4. Step 4: Simplify right side
    19,347.40x = 222,129,251.89
  5. Step 5: Solve for x
    x = 222,129,251.89/19,347.40
  6. Step 6: Final answer
    x = 11,481.09

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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.