Home / 28,108.26-38,789.28-15,533.10

Finding the Fourth Proportional to 28,108.26, 38,789.28 and 15,533.10

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Solution

The fourth proportional to 28,108.26, 38,789.28 and 15,533.10 is: 21,435.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.26 : 38,789.28 = 15,533.10 : x
  2. Step 2: Convert to fraction form
    28,108.26/38,789.28 = 15,533.10/x
  3. Step 3: Cross multiply
    28,108.26x = 38,789.28 × 15,533.10
  4. Step 4: Simplify right side
    28,108.26x = 602,517,765.17
  5. Step 5: Solve for x
    x = 602,517,765.17/28,108.26
  6. Step 6: Final answer
    x = 21,435.61

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1.5x scale

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.