Home / 18,729.10-28,098.36-8,865.72

Finding the Fourth Proportional to 18,729.10, 28,098.36 and 8,865.72

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Solution

The fourth proportional to 18,729.10, 28,098.36 and 8,865.72 is: 13,300.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.10 : 28,098.36 = 8,865.72 : x
  2. Step 2: Convert to fraction form
    18,729.10/28,098.36 = 8,865.72/x
  3. Step 3: Cross multiply
    18,729.10x = 28,098.36 × 8,865.72
  4. Step 4: Simplify right side
    18,729.10x = 249,112,192.22
  5. Step 5: Solve for x
    x = 249,112,192.22/18,729.10
  6. Step 6: Final answer
    x = 13,300.81

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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.