Home / 21,059.46-31,581.90-11,713.68

Finding the Fourth Proportional to 21,059.46, 31,581.90 and 11,713.68

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Solution

The fourth proportional to 21,059.46, 31,581.90 and 11,713.68 is: 17,566.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.46 : 31,581.90 = 11,713.68 : x
  2. Step 2: Convert to fraction form
    21,059.46/31,581.90 = 11,713.68/x
  3. Step 3: Cross multiply
    21,059.46x = 31,581.90 × 11,713.68
  4. Step 4: Simplify right side
    21,059.46x = 369,940,270.39
  5. Step 5: Solve for x
    x = 369,940,270.39/21,059.46
  6. Step 6: Final answer
    x = 17,566.47

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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.