Home / 18,926.31-28,367.60-11,031.51

Finding the Fourth Proportional to 18,926.31, 28,367.60 and 11,031.51

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Solution

The fourth proportional to 18,926.31, 28,367.60 and 11,031.51 is: 16,534.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.31 : 28,367.60 = 11,031.51 : x
  2. Step 2: Convert to fraction form
    18,926.31/28,367.60 = 11,031.51/x
  3. Step 3: Cross multiply
    18,926.31x = 28,367.60 × 11,031.51
  4. Step 4: Simplify right side
    18,926.31x = 312,937,407.92
  5. Step 5: Solve for x
    x = 312,937,407.92/18,926.31
  6. Step 6: Final answer
    x = 16,534.52

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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.