Home / 15,786.40-23,690.40-8,766.40

Finding the Fourth Proportional to 15,786.40, 23,690.40 and 8,766.40

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Solution

The fourth proportional to 15,786.40, 23,690.40 and 8,766.40 is: 13,155.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786.40 : 23,690.40 = 8,766.40 : x
  2. Step 2: Convert to fraction form
    15,786.40/23,690.40 = 8,766.40/x
  3. Step 3: Cross multiply
    15,786.40x = 23,690.40 × 8,766.40
  4. Step 4: Simplify right side
    15,786.40x = 207,679,522.56
  5. Step 5: Solve for x
    x = 207,679,522.56/15,786.40
  6. Step 6: Final answer
    x = 13,155.60

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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.