Home / 21,720.72-32,580.39-6,930.54

Finding the Fourth Proportional to 21,720.72, 32,580.39 and 6,930.54

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Solution

The fourth proportional to 21,720.72, 32,580.39 and 6,930.54 is: 10,395.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.72 : 32,580.39 = 6,930.54 : x
  2. Step 2: Convert to fraction form
    21,720.72/32,580.39 = 6,930.54/x
  3. Step 3: Cross multiply
    21,720.72x = 32,580.39 × 6,930.54
  4. Step 4: Simplify right side
    21,720.72x = 225,799,696.11
  5. Step 5: Solve for x
    x = 225,799,696.11/21,720.72
  6. Step 6: Final answer
    x = 10,395.59

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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.