Home / 21,330.19-31,995.29-5,747.82

Finding the Fourth Proportional to 21,330.19, 31,995.29 and 5,747.82

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Solution

The fourth proportional to 21,330.19, 31,995.29 and 5,747.82 is: 8,621.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.19 : 31,995.29 = 5,747.82 : x
  2. Step 2: Convert to fraction form
    21,330.19/31,995.29 = 5,747.82/x
  3. Step 3: Cross multiply
    21,330.19x = 31,995.29 × 5,747.82
  4. Step 4: Simplify right side
    21,330.19x = 183,903,167.77
  5. Step 5: Solve for x
    x = 183,903,167.77/21,330.19
  6. Step 6: Final answer
    x = 8,621.73

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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.