Home / 22,621.72-31,218.06-12,550.36

Finding the Fourth Proportional to 22,621.72, 31,218.06 and 12,550.36

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Solution

The fourth proportional to 22,621.72, 31,218.06 and 12,550.36 is: 17,319.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,621.72 : 31,218.06 = 12,550.36 : x
  2. Step 2: Convert to fraction form
    22,621.72/31,218.06 = 12,550.36/x
  3. Step 3: Cross multiply
    22,621.72x = 31,218.06 × 12,550.36
  4. Step 4: Simplify right side
    22,621.72x = 391,797,891.50
  5. Step 5: Solve for x
    x = 391,797,891.50/22,621.72
  6. Step 6: Final answer
    x = 17,319.54

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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.