Home / 13,933.80-20,901.38-5,612.69

Finding the Fourth Proportional to 13,933.80, 20,901.38 and 5,612.69

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Solution

The fourth proportional to 13,933.80, 20,901.38 and 5,612.69 is: 8,419.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,933.80 : 20,901.38 = 5,612.69 : x
  2. Step 2: Convert to fraction form
    13,933.80/20,901.38 = 5,612.69/x
  3. Step 3: Cross multiply
    13,933.80x = 20,901.38 × 5,612.69
  4. Step 4: Simplify right side
    13,933.80x = 117,312,990.70
  5. Step 5: Solve for x
    x = 117,312,990.70/13,933.80
  6. Step 6: Final answer
    x = 8,419.31

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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.