Home / 31,451.16-43,384.17-20,116.52

Finding the Fourth Proportional to 31,451.16, 43,384.17 and 20,116.52

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Solution

The fourth proportional to 31,451.16, 43,384.17 and 20,116.52 is: 27,749.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,451.16 : 43,384.17 = 20,116.52 : x
  2. Step 2: Convert to fraction form
    31,451.16/43,384.17 = 20,116.52/x
  3. Step 3: Cross multiply
    31,451.16x = 43,384.17 × 20,116.52
  4. Step 4: Simplify right side
    31,451.16x = 872,738,205.98
  5. Step 5: Solve for x
    x = 872,738,205.98/31,451.16
  6. Step 6: Final answer
    x = 27,749.00

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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.