Home / 28,138.06-38,829-15,562

Finding the Fourth Proportional to 28,138.06, 38,829 and 15,562

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Solution

The fourth proportional to 28,138.06, 38,829 and 15,562 is: 21,474.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.06 : 38,829 = 15,562 : x
  2. Step 2: Convert to fraction form
    28,138.06/38,829 = 15,562/x
  3. Step 3: Cross multiply
    28,138.06x = 38,829 × 15,562
  4. Step 4: Simplify right side
    28,138.06x = 604,256,898
  5. Step 5: Solve for x
    x = 604,256,898/28,138.06
  6. Step 6: Final answer
    x = 21,474.72

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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.