Home / 20,513.19-30,767.05-5,720.87

Finding the Fourth Proportional to 20,513.19, 30,767.05 and 5,720.87

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Solution

The fourth proportional to 20,513.19, 30,767.05 and 5,720.87 is: 8,580.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.19 : 30,767.05 = 5,720.87 : x
  2. Step 2: Convert to fraction form
    20,513.19/30,767.05 = 5,720.87/x
  3. Step 3: Cross multiply
    20,513.19x = 30,767.05 × 5,720.87
  4. Step 4: Simplify right side
    20,513.19x = 176,014,128.89
  5. Step 5: Solve for x
    x = 176,014,128.89/20,513.19
  6. Step 6: Final answer
    x = 8,580.54

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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.