Home / 22,620.25-31,215.95-13,186.99

Finding the Fourth Proportional to 22,620.25, 31,215.95 and 13,186.99

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Solution

The fourth proportional to 22,620.25, 31,215.95 and 13,186.99 is: 18,198.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,620.25 : 31,215.95 = 13,186.99 : x
  2. Step 2: Convert to fraction form
    22,620.25/31,215.95 = 13,186.99/x
  3. Step 3: Cross multiply
    22,620.25x = 31,215.95 × 13,186.99
  4. Step 4: Simplify right side
    22,620.25x = 411,644,420.49
  5. Step 5: Solve for x
    x = 411,644,420.49/22,620.25
  6. Step 6: Final answer
    x = 18,198.05

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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.