Home / 19,129.20-26,434.80-14,405.28

Finding the Fourth Proportional to 19,129.20, 26,434.80 and 14,405.28

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Solution

The fourth proportional to 19,129.20, 26,434.80 and 14,405.28 is: 19,906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,129.20 : 26,434.80 = 14,405.28 : x
  2. Step 2: Convert to fraction form
    19,129.20/26,434.80 = 14,405.28/x
  3. Step 3: Cross multiply
    19,129.20x = 26,434.80 × 14,405.28
  4. Step 4: Simplify right side
    19,129.20x = 380,800,695.74
  5. Step 5: Solve for x
    x = 380,800,695.74/19,129.20
  6. Step 6: Final answer
    x = 19,906.78

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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.