Home / 31,621.77-43,619.72-20,287.26

Finding the Fourth Proportional to 31,621.77, 43,619.72 and 20,287.26

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Solution

The fourth proportional to 31,621.77, 43,619.72 and 20,287.26 is: 27,984.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.77 : 43,619.72 = 20,287.26 : x
  2. Step 2: Convert to fraction form
    31,621.77/43,619.72 = 20,287.26/x
  3. Step 3: Cross multiply
    31,621.77x = 43,619.72 × 20,287.26
  4. Step 4: Simplify right side
    31,621.77x = 884,924,499.33
  5. Step 5: Solve for x
    x = 884,924,499.33/31,621.77
  6. Step 6: Final answer
    x = 27,984.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.