Home / 20,982.48-31,451.68-10,572.40

Finding the Fourth Proportional to 20,982.48, 31,451.68 and 10,572.40

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Solution

The fourth proportional to 20,982.48, 31,451.68 and 10,572.40 is: 15,847.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.48 : 31,451.68 = 10,572.40 : x
  2. Step 2: Convert to fraction form
    20,982.48/31,451.68 = 10,572.40/x
  3. Step 3: Cross multiply
    20,982.48x = 31,451.68 × 10,572.40
  4. Step 4: Simplify right side
    20,982.48x = 332,519,741.63
  5. Step 5: Solve for x
    x = 332,519,741.63/20,982.48
  6. Step 6: Final answer
    x = 15,847.49

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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.