Home / 21,332.63-31,929.23-19,286.42

Finding the Fourth Proportional to 21,332.63, 31,929.23 and 19,286.42

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Solution

The fourth proportional to 21,332.63, 31,929.23 and 19,286.42 is: 28,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.63 : 31,929.23 = 19,286.42 : x
  2. Step 2: Convert to fraction form
    21,332.63/31,929.23 = 19,286.42/x
  3. Step 3: Cross multiply
    21,332.63x = 31,929.23 × 19,286.42
  4. Step 4: Simplify right side
    21,332.63x = 615,800,540.06
  5. Step 5: Solve for x
    x = 615,800,540.06/21,332.63
  6. Step 6: Final answer
    x = 28,866.60

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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.