Home / 31,784.28-43,859.40-18,861.33

Finding the Fourth Proportional to 31,784.28, 43,859.40 and 18,861.33

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Solution

The fourth proportional to 31,784.28, 43,859.40 and 18,861.33 is: 26,026.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,784.28 : 43,859.40 = 18,861.33 : x
  2. Step 2: Convert to fraction form
    31,784.28/43,859.40 = 18,861.33/x
  3. Step 3: Cross multiply
    31,784.28x = 43,859.40 × 18,861.33
  4. Step 4: Simplify right side
    31,784.28x = 827,246,617.00
  5. Step 5: Solve for x
    x = 827,246,617.00/31,784.28
  6. Step 6: Final answer
    x = 26,026.91

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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.