Home / 22,631.63-31,235.41-13,200.20

Finding the Fourth Proportional to 22,631.63, 31,235.41 and 13,200.20

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Solution

The fourth proportional to 22,631.63, 31,235.41 and 13,200.20 is: 18,218.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,631.63 : 31,235.41 = 13,200.20 : x
  2. Step 2: Convert to fraction form
    22,631.63/31,235.41 = 13,200.20/x
  3. Step 3: Cross multiply
    22,631.63x = 31,235.41 × 13,200.20
  4. Step 4: Simplify right side
    22,631.63x = 412,313,436.90
  5. Step 5: Solve for x
    x = 412,313,436.90/22,631.63
  6. Step 6: Final answer
    x = 18,218.46

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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.