Home / 15,879.40-23,819.10-4,787.80

Finding the Fourth Proportional to 15,879.40, 23,819.10 and 4,787.80

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Solution

The fourth proportional to 15,879.40, 23,819.10 and 4,787.80 is: 7,181.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,879.40 : 23,819.10 = 4,787.80 : x
  2. Step 2: Convert to fraction form
    15,879.40/23,819.10 = 4,787.80/x
  3. Step 3: Cross multiply
    15,879.40x = 23,819.10 × 4,787.80
  4. Step 4: Simplify right side
    15,879.40x = 114,041,086.98
  5. Step 5: Solve for x
    x = 114,041,086.98/15,879.40
  6. Step 6: Final answer
    x = 7,181.70

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1.5x scale

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.