Home / 22,239.87-30,690.12-13,292.31

Finding the Fourth Proportional to 22,239.87, 30,690.12 and 13,292.31

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Solution

The fourth proportional to 22,239.87, 30,690.12 and 13,292.31 is: 18,342.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,239.87 : 30,690.12 = 13,292.31 : x
  2. Step 2: Convert to fraction form
    22,239.87/30,690.12 = 13,292.31/x
  3. Step 3: Cross multiply
    22,239.87x = 30,690.12 × 13,292.31
  4. Step 4: Simplify right side
    22,239.87x = 407,942,588.98
  5. Step 5: Solve for x
    x = 407,942,588.98/22,239.87
  6. Step 6: Final answer
    x = 18,342.85

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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.