Home / 22,620.48-31,209.84-13,187.22

Finding the Fourth Proportional to 22,620.48, 31,209.84 and 13,187.22

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Solution

The fourth proportional to 22,620.48, 31,209.84 and 13,187.22 is: 18,194.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,620.48 : 31,209.84 = 13,187.22 : x
  2. Step 2: Convert to fraction form
    22,620.48/31,209.84 = 13,187.22/x
  3. Step 3: Cross multiply
    22,620.48x = 31,209.84 × 13,187.22
  4. Step 4: Simplify right side
    22,620.48x = 411,571,026.24
  5. Step 5: Solve for x
    x = 411,571,026.24/22,620.48
  6. Step 6: Final answer
    x = 18,194.62

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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.