Home / 21,089.97-31,614.30-11,734.47

Finding the Fourth Proportional to 21,089.97, 31,614.30 and 11,734.47

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Solution

The fourth proportional to 21,089.97, 31,614.30 and 11,734.47 is: 17,590.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.97 : 31,614.30 = 11,734.47 : x
  2. Step 2: Convert to fraction form
    21,089.97/31,614.30 = 11,734.47/x
  3. Step 3: Cross multiply
    21,089.97x = 31,614.30 × 11,734.47
  4. Step 4: Simplify right side
    21,089.97x = 370,977,054.92
  5. Step 5: Solve for x
    x = 370,977,054.92/21,089.97
  6. Step 6: Final answer
    x = 17,590.21

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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.