Home / 28,947.59-43,422.12-7,887.80

Finding the Fourth Proportional to 28,947.59, 43,422.12 and 7,887.80

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Solution

The fourth proportional to 28,947.59, 43,422.12 and 7,887.80 is: 11,831.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.59 : 43,422.12 = 7,887.80 : x
  2. Step 2: Convert to fraction form
    28,947.59/43,422.12 = 7,887.80/x
  3. Step 3: Cross multiply
    28,947.59x = 43,422.12 × 7,887.80
  4. Step 4: Simplify right side
    28,947.59x = 342,504,998.14
  5. Step 5: Solve for x
    x = 342,504,998.14/28,947.59
  6. Step 6: Final answer
    x = 11,831.90

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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.