Home / 20,500.70-30,749.25-5,708.66

Finding the Fourth Proportional to 20,500.70, 30,749.25 and 5,708.66

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Solution

The fourth proportional to 20,500.70, 30,749.25 and 5,708.66 is: 8,562.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.70 : 30,749.25 = 5,708.66 : x
  2. Step 2: Convert to fraction form
    20,500.70/30,749.25 = 5,708.66/x
  3. Step 3: Cross multiply
    20,500.70x = 30,749.25 × 5,708.66
  4. Step 4: Simplify right side
    20,500.70x = 175,537,013.51
  5. Step 5: Solve for x
    x = 175,537,013.51/20,500.70
  6. Step 6: Final answer
    x = 8,562.49

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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.