Home / 31,185.72-43,044.14-20,027.16

Finding the Fourth Proportional to 31,185.72, 43,044.14 and 20,027.16

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Solution

The fourth proportional to 31,185.72, 43,044.14 and 20,027.16 is: 27,642.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,185.72 : 43,044.14 = 20,027.16 : x
  2. Step 2: Convert to fraction form
    31,185.72/43,044.14 = 20,027.16/x
  3. Step 3: Cross multiply
    31,185.72x = 43,044.14 × 20,027.16
  4. Step 4: Simplify right side
    31,185.72x = 862,051,878.84
  5. Step 5: Solve for x
    x = 862,051,878.84/31,185.72
  6. Step 6: Final answer
    x = 27,642.52

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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.