Home / 20,513.18-30,767.03-5,720.86

Finding the Fourth Proportional to 20,513.18, 30,767.03 and 5,720.86

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Solution

The fourth proportional to 20,513.18, 30,767.03 and 5,720.86 is: 8,580.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.18 : 30,767.03 = 5,720.86 : x
  2. Step 2: Convert to fraction form
    20,513.18/30,767.03 = 5,720.86/x
  3. Step 3: Cross multiply
    20,513.18x = 30,767.03 × 5,720.86
  4. Step 4: Simplify right side
    20,513.18x = 176,013,815.78
  5. Step 5: Solve for x
    x = 176,013,815.78/20,513.18
  6. Step 6: Final answer
    x = 8,580.52

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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.