Home / 15,139.76-20,893.32-9,172.52

Finding the Fourth Proportional to 15,139.76, 20,893.32 and 9,172.52

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Solution

The fourth proportional to 15,139.76, 20,893.32 and 9,172.52 is: 12,658.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.76 : 20,893.32 = 9,172.52 : x
  2. Step 2: Convert to fraction form
    15,139.76/20,893.32 = 9,172.52/x
  3. Step 3: Cross multiply
    15,139.76x = 20,893.32 × 9,172.52
  4. Step 4: Simplify right side
    15,139.76x = 191,644,395.57
  5. Step 5: Solve for x
    x = 191,644,395.57/15,139.76
  6. Step 6: Final answer
    x = 12,658.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.