Home / 20,827.67-31,247.78-9,740.79

Finding the Fourth Proportional to 20,827.67, 31,247.78 and 9,740.79

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Solution

The fourth proportional to 20,827.67, 31,247.78 and 9,740.79 is: 14,614.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.67 : 31,247.78 = 9,740.79 : x
  2. Step 2: Convert to fraction form
    20,827.67/31,247.78 = 9,740.79/x
  3. Step 3: Cross multiply
    20,827.67x = 31,247.78 × 9,740.79
  4. Step 4: Simplify right side
    20,827.67x = 304,378,014.24
  5. Step 5: Solve for x
    x = 304,378,014.24/20,827.67
  6. Step 6: Final answer
    x = 14,614.12

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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.