Home / 20,959.06-31,431.92-6,916.47

Finding the Fourth Proportional to 20,959.06, 31,431.92 and 6,916.47

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Solution

The fourth proportional to 20,959.06, 31,431.92 and 6,916.47 is: 10,372.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.06 : 31,431.92 = 6,916.47 : x
  2. Step 2: Convert to fraction form
    20,959.06/31,431.92 = 6,916.47/x
  3. Step 3: Cross multiply
    20,959.06x = 31,431.92 × 6,916.47
  4. Step 4: Simplify right side
    20,959.06x = 217,397,931.72
  5. Step 5: Solve for x
    x = 217,397,931.72/20,959.06
  6. Step 6: Final answer
    x = 10,372.50

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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.