Home / 20,959.23-31,432.16-6,916.64

Finding the Fourth Proportional to 20,959.23, 31,432.16 and 6,916.64

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Solution

The fourth proportional to 20,959.23, 31,432.16 and 6,916.64 is: 10,372.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.23 : 31,432.16 = 6,916.64 : x
  2. Step 2: Convert to fraction form
    20,959.23/31,432.16 = 6,916.64/x
  3. Step 3: Cross multiply
    20,959.23x = 31,432.16 × 6,916.64
  4. Step 4: Simplify right side
    20,959.23x = 217,404,900.56
  5. Step 5: Solve for x
    x = 217,404,900.56/20,959.23
  6. Step 6: Final answer
    x = 10,372.75

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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.