Home / 20,873.52-31,275.64-15,021.36

Finding the Fourth Proportional to 20,873.52, 31,275.64 and 15,021.36

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Solution

The fourth proportional to 20,873.52, 31,275.64 and 15,021.36 is: 22,507.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.52 : 31,275.64 = 15,021.36 : x
  2. Step 2: Convert to fraction form
    20,873.52/31,275.64 = 15,021.36/x
  3. Step 3: Cross multiply
    20,873.52x = 31,275.64 × 15,021.36
  4. Step 4: Simplify right side
    20,873.52x = 469,802,647.67
  5. Step 5: Solve for x
    x = 469,802,647.67/20,873.52
  6. Step 6: Final answer
    x = 22,507.11

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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.