Home / 21,434-29,546.52-18,433.76

Finding the Fourth Proportional to 21,434, 29,546.52 and 18,433.76

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Solution

The fourth proportional to 21,434, 29,546.52 and 18,433.76 is: 25,410.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,434 : 29,546.52 = 18,433.76 : x
  2. Step 2: Convert to fraction form
    21,434/29,546.52 = 18,433.76/x
  3. Step 3: Cross multiply
    21,434x = 29,546.52 × 18,433.76
  4. Step 4: Simplify right side
    21,434x = 544,653,458.52
  5. Step 5: Solve for x
    x = 544,653,458.52/21,434
  6. Step 6: Final answer
    x = 25,410.72

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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.