Home / 20,942.57-31,417.70-6,903.42

Finding the Fourth Proportional to 20,942.57, 31,417.70 and 6,903.42

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Solution

The fourth proportional to 20,942.57, 31,417.70 and 6,903.42 is: 10,356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.57 : 31,417.70 = 6,903.42 : x
  2. Step 2: Convert to fraction form
    20,942.57/31,417.70 = 6,903.42/x
  3. Step 3: Cross multiply
    20,942.57x = 31,417.70 × 6,903.42
  4. Step 4: Simplify right side
    20,942.57x = 216,889,578.53
  5. Step 5: Solve for x
    x = 216,889,578.53/20,942.57
  6. Step 6: Final answer
    x = 10,356.40

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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.