Home / 20,871.34-31,296.79-10,329.19

Finding the Fourth Proportional to 20,871.34, 31,296.79 and 10,329.19

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Solution

The fourth proportional to 20,871.34, 31,296.79 and 10,329.19 is: 15,488.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,871.34 : 31,296.79 = 10,329.19 : x
  2. Step 2: Convert to fraction form
    20,871.34/31,296.79 = 10,329.19/x
  3. Step 3: Cross multiply
    20,871.34x = 31,296.79 × 10,329.19
  4. Step 4: Simplify right side
    20,871.34x = 323,270,490.30
  5. Step 5: Solve for x
    x = 323,270,490.30/20,871.34
  6. Step 6: Final answer
    x = 15,488.73

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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.