Home / 22,774.80-31,429.20-13,819.92

Finding the Fourth Proportional to 22,774.80, 31,429.20 and 13,819.92

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Solution

The fourth proportional to 22,774.80, 31,429.20 and 13,819.92 is: 19,071.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,774.80 : 31,429.20 = 13,819.92 : x
  2. Step 2: Convert to fraction form
    22,774.80/31,429.20 = 13,819.92/x
  3. Step 3: Cross multiply
    22,774.80x = 31,429.20 × 13,819.92
  4. Step 4: Simplify right side
    22,774.80x = 434,349,029.66
  5. Step 5: Solve for x
    x = 434,349,029.66/22,774.80
  6. Step 6: Final answer
    x = 19,071.48

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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.