Home / 28,156,191.75-38,855,544.62-15,279,135.75

Finding the Fourth Proportional to 28,156,191.75, 38,855,544.62 and 15,279,135.75

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Solution

The fourth proportional to 28,156,191.75, 38,855,544.62 and 15,279,135.75 is: 21,085,207.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156,191.75 : 38,855,544.62 = 15,279,135.75 : x
  2. Step 2: Convert to fraction form
    28,156,191.75/38,855,544.62 = 15,279,135.75/x
  3. Step 3: Cross multiply
    28,156,191.75x = 38,855,544.62 × 15,279,135.75
  4. Step 4: Simplify right side
    28,156,191.75x = 593,679,140,812,766.50
  5. Step 5: Solve for x
    x = 593,679,140,812,766.50/28,156,191.75
  6. Step 6: Final answer
    x = 21,085,207.34

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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.