Home / 18,342.14-25,214.86-15,780.54

Finding the Fourth Proportional to 18,342.14, 25,214.86 and 15,780.54

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Solution

The fourth proportional to 18,342.14, 25,214.86 and 15,780.54 is: 21,693.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.14 : 25,214.86 = 15,780.54 : x
  2. Step 2: Convert to fraction form
    18,342.14/25,214.86 = 15,780.54/x
  3. Step 3: Cross multiply
    18,342.14x = 25,214.86 × 15,780.54
  4. Step 4: Simplify right side
    18,342.14x = 397,904,106.82
  5. Step 5: Solve for x
    x = 397,904,106.82/18,342.14
  6. Step 6: Final answer
    x = 21,693.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.