Home / 28,017.86-38,664.83-15,442.61

Finding the Fourth Proportional to 28,017.86, 38,664.83 and 15,442.61

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Solution

The fourth proportional to 28,017.86, 38,664.83 and 15,442.61 is: 21,310.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017.86 : 38,664.83 = 15,442.61 : x
  2. Step 2: Convert to fraction form
    28,017.86/38,664.83 = 15,442.61/x
  3. Step 3: Cross multiply
    28,017.86x = 38,664.83 × 15,442.61
  4. Step 4: Simplify right side
    28,017.86x = 597,085,890.41
  5. Step 5: Solve for x
    x = 597,085,890.41/28,017.86
  6. Step 6: Final answer
    x = 21,310.90

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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.