Home / 20,955.66-31,434.50-6,916.94

Finding the Fourth Proportional to 20,955.66, 31,434.50 and 6,916.94

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Solution

The fourth proportional to 20,955.66, 31,434.50 and 6,916.94 is: 10,375.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.66 : 31,434.50 = 6,916.94 : x
  2. Step 2: Convert to fraction form
    20,955.66/31,434.50 = 6,916.94/x
  3. Step 3: Cross multiply
    20,955.66x = 31,434.50 × 6,916.94
  4. Step 4: Simplify right side
    20,955.66x = 217,430,528.43
  5. Step 5: Solve for x
    x = 217,430,528.43/20,955.66
  6. Step 6: Final answer
    x = 10,375.74

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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.