Home / 21,162.90-31,716.50-11,807.33

Finding the Fourth Proportional to 21,162.90, 31,716.50 and 11,807.33

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Solution

The fourth proportional to 21,162.90, 31,716.50 and 11,807.33 is: 17,695.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.90 : 31,716.50 = 11,807.33 : x
  2. Step 2: Convert to fraction form
    21,162.90/31,716.50 = 11,807.33/x
  3. Step 3: Cross multiply
    21,162.90x = 31,716.50 × 11,807.33
  4. Step 4: Simplify right side
    21,162.90x = 374,487,171.82
  5. Step 5: Solve for x
    x = 374,487,171.82/21,162.90
  6. Step 6: Final answer
    x = 17,695.45

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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.