Home / 20,940.93-31,381.58-10,400.62

Finding the Fourth Proportional to 20,940.93, 31,381.58 and 10,400.62

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Solution

The fourth proportional to 20,940.93, 31,381.58 and 10,400.62 is: 15,586.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.93 : 31,381.58 = 10,400.62 : x
  2. Step 2: Convert to fraction form
    20,940.93/31,381.58 = 10,400.62/x
  3. Step 3: Cross multiply
    20,940.93x = 31,381.58 × 10,400.62
  4. Step 4: Simplify right side
    20,940.93x = 326,387,836.46
  5. Step 5: Solve for x
    x = 326,387,836.46/20,940.93
  6. Step 6: Final answer
    x = 15,586.12

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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.