Home / 21,062.46-31,586.40-11,716.68

Finding the Fourth Proportional to 21,062.46, 31,586.40 and 11,716.68

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Solution

The fourth proportional to 21,062.46, 31,586.40 and 11,716.68 is: 17,570.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.46 : 31,586.40 = 11,716.68 : x
  2. Step 2: Convert to fraction form
    21,062.46/31,586.40 = 11,716.68/x
  3. Step 3: Cross multiply
    21,062.46x = 31,586.40 × 11,716.68
  4. Step 4: Simplify right side
    21,062.46x = 370,087,741.15
  5. Step 5: Solve for x
    x = 370,087,741.15/21,062.46
  6. Step 6: Final answer
    x = 17,570.96

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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.