Home / 28,996.80-43,535.70-18,531.60

Finding the Fourth Proportional to 28,996.80, 43,535.70 and 18,531.60

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Solution

The fourth proportional to 28,996.80, 43,535.70 and 18,531.60 is: 27,823.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,996.80 : 43,535.70 = 18,531.60 : x
  2. Step 2: Convert to fraction form
    28,996.80/43,535.70 = 18,531.60/x
  3. Step 3: Cross multiply
    28,996.80x = 43,535.70 × 18,531.60
  4. Step 4: Simplify right side
    28,996.80x = 806,786,178.12
  5. Step 5: Solve for x
    x = 806,786,178.12/28,996.80
  6. Step 6: Final answer
    x = 27,823.28

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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.