Home / 20,938.68-31,418.34-9,846.36

Finding the Fourth Proportional to 20,938.68, 31,418.34 and 9,846.36

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Solution

The fourth proportional to 20,938.68, 31,418.34 and 9,846.36 is: 14,774.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.68 : 31,418.34 = 9,846.36 : x
  2. Step 2: Convert to fraction form
    20,938.68/31,418.34 = 9,846.36/x
  3. Step 3: Cross multiply
    20,938.68x = 31,418.34 × 9,846.36
  4. Step 4: Simplify right side
    20,938.68x = 309,356,286.24
  5. Step 5: Solve for x
    x = 309,356,286.24/20,938.68
  6. Step 6: Final answer
    x = 14,774.39

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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.