Home / 21,272.76-31,914-10,182.24

Finding the Fourth Proportional to 21,272.76, 31,914 and 10,182.24

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Solution

The fourth proportional to 21,272.76, 31,914 and 10,182.24 is: 15,275.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.76 : 31,914 = 10,182.24 : x
  2. Step 2: Convert to fraction form
    21,272.76/31,914 = 10,182.24/x
  3. Step 3: Cross multiply
    21,272.76x = 31,914 × 10,182.24
  4. Step 4: Simplify right side
    21,272.76x = 324,956,007.36
  5. Step 5: Solve for x
    x = 324,956,007.36/21,272.76
  6. Step 6: Final answer
    x = 15,275.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.