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Finding the Fourth Proportional to 31,941.91, 44,066.86 and 21,191.86

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Solution

The fourth proportional to 31,941.91, 44,066.86 and 21,191.86 is: 29,236.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,941.91 : 44,066.86 = 21,191.86 : x
  2. Step 2: Convert to fraction form
    31,941.91/44,066.86 = 21,191.86/x
  3. Step 3: Cross multiply
    31,941.91x = 44,066.86 × 21,191.86
  4. Step 4: Simplify right side
    31,941.91x = 933,858,727.76
  5. Step 5: Solve for x
    x = 933,858,727.76/31,941.91
  6. Step 6: Final answer
    x = 29,236.16

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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.