Home / 21,011.28-31,556.52-19,277.52

Finding the Fourth Proportional to 21,011.28, 31,556.52 and 19,277.52

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Solution

The fourth proportional to 21,011.28, 31,556.52 and 19,277.52 is: 28,952.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.28 : 31,556.52 = 19,277.52 : x
  2. Step 2: Convert to fraction form
    21,011.28/31,556.52 = 19,277.52/x
  3. Step 3: Cross multiply
    21,011.28x = 31,556.52 × 19,277.52
  4. Step 4: Simplify right side
    21,011.28x = 608,331,445.43
  5. Step 5: Solve for x
    x = 608,331,445.43/21,011.28
  6. Step 6: Final answer
    x = 28,952.61

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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.