Home / 20,720.26-31,079.62-5,929.16

Finding the Fourth Proportional to 20,720.26, 31,079.62 and 5,929.16

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Solution

The fourth proportional to 20,720.26, 31,079.62 and 5,929.16 is: 8,893.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.26 : 31,079.62 = 5,929.16 : x
  2. Step 2: Convert to fraction form
    20,720.26/31,079.62 = 5,929.16/x
  3. Step 3: Cross multiply
    20,720.26x = 31,079.62 × 5,929.16
  4. Step 4: Simplify right side
    20,720.26x = 184,276,039.72
  5. Step 5: Solve for x
    x = 184,276,039.72/20,720.26
  6. Step 6: Final answer
    x = 8,893.52

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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.