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Finding the Fourth Proportional to 19,866.88, 29,799.64 and 9,331.01

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Solution

The fourth proportional to 19,866.88, 29,799.64 and 9,331.01 is: 13,996.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.88 : 29,799.64 = 9,331.01 : x
  2. Step 2: Convert to fraction form
    19,866.88/29,799.64 = 9,331.01/x
  3. Step 3: Cross multiply
    19,866.88x = 29,799.64 × 9,331.01
  4. Step 4: Simplify right side
    19,866.88x = 278,060,589.84
  5. Step 5: Solve for x
    x = 278,060,589.84/19,866.88
  6. Step 6: Final answer
    x = 13,996.19

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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.