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Finding the Fourth Proportional to 21,832.66, 32,695.21 and 12,449.51

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Solution

The fourth proportional to 21,832.66, 32,695.21 and 12,449.51 is: 18,643.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.66 : 32,695.21 = 12,449.51 : x
  2. Step 2: Convert to fraction form
    21,832.66/32,695.21 = 12,449.51/x
  3. Step 3: Cross multiply
    21,832.66x = 32,695.21 × 12,449.51
  4. Step 4: Simplify right side
    21,832.66x = 407,039,502.45
  5. Step 5: Solve for x
    x = 407,039,502.45/21,832.66
  6. Step 6: Final answer
    x = 18,643.61

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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.