Home / 31,727.16-43,801.38-21,670.20

Finding the Fourth Proportional to 31,727.16, 43,801.38 and 21,670.20

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Solution

The fourth proportional to 31,727.16, 43,801.38 and 21,670.20 is: 29,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,727.16 : 43,801.38 = 21,670.20 : x
  2. Step 2: Convert to fraction form
    31,727.16/43,801.38 = 21,670.20/x
  3. Step 3: Cross multiply
    31,727.16x = 43,801.38 × 21,670.20
  4. Step 4: Simplify right side
    31,727.16x = 949,184,664.88
  5. Step 5: Solve for x
    x = 949,184,664.88/31,727.16
  6. Step 6: Final answer
    x = 29,917.10

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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.