Home / 31,317.60-43,221.72-19,997.52

Finding the Fourth Proportional to 31,317.60, 43,221.72 and 19,997.52

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Solution

The fourth proportional to 31,317.60, 43,221.72 and 19,997.52 is: 27,598.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,317.60 : 43,221.72 = 19,997.52 : x
  2. Step 2: Convert to fraction form
    31,317.60/43,221.72 = 19,997.52/x
  3. Step 3: Cross multiply
    31,317.60x = 43,221.72 × 19,997.52
  4. Step 4: Simplify right side
    31,317.60x = 864,327,210.13
  5. Step 5: Solve for x
    x = 864,327,210.13/31,317.60
  6. Step 6: Final answer
    x = 27,598.77

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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.