Home / 20,938.14-31,400.45-6,894.83

Finding the Fourth Proportional to 20,938.14, 31,400.45 and 6,894.83

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Solution

The fourth proportional to 20,938.14, 31,400.45 and 6,894.83 is: 10,340.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.14 : 31,400.45 = 6,894.83 : x
  2. Step 2: Convert to fraction form
    20,938.14/31,400.45 = 6,894.83/x
  3. Step 3: Cross multiply
    20,938.14x = 31,400.45 × 6,894.83
  4. Step 4: Simplify right side
    20,938.14x = 216,500,599.05
  5. Step 5: Solve for x
    x = 216,500,599.05/20,938.14
  6. Step 6: Final answer
    x = 10,340.01

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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.