Home / 20,938.84-31,410.29-6,893.12

Finding the Fourth Proportional to 20,938.84, 31,410.29 and 6,893.12

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Solution

The fourth proportional to 20,938.84, 31,410.29 and 6,893.12 is: 10,340.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.84 : 31,410.29 = 6,893.12 : x
  2. Step 2: Convert to fraction form
    20,938.84/31,410.29 = 6,893.12/x
  3. Step 3: Cross multiply
    20,938.84x = 31,410.29 × 6,893.12
  4. Step 4: Simplify right side
    20,938.84x = 216,514,993.96
  5. Step 5: Solve for x
    x = 216,514,993.96/20,938.84
  6. Step 6: Final answer
    x = 10,340.35

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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.