Home / 20,889.29-31,336.07-9,040.82

Finding the Fourth Proportional to 20,889.29, 31,336.07 and 9,040.82

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Solution

The fourth proportional to 20,889.29, 31,336.07 and 9,040.82 is: 13,562.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.29 : 31,336.07 = 9,040.82 : x
  2. Step 2: Convert to fraction form
    20,889.29/31,336.07 = 9,040.82/x
  3. Step 3: Cross multiply
    20,889.29x = 31,336.07 × 9,040.82
  4. Step 4: Simplify right side
    20,889.29x = 283,303,566.49
  5. Step 5: Solve for x
    x = 283,303,566.49/20,889.29
  6. Step 6: Final answer
    x = 13,562.14

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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.