Home / 15,778.20-23,647.20-8,386.20

Finding the Fourth Proportional to 15,778.20, 23,647.20 and 8,386.20

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Solution

The fourth proportional to 15,778.20, 23,647.20 and 8,386.20 is: 12,568.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.20 : 23,647.20 = 8,386.20 : x
  2. Step 2: Convert to fraction form
    15,778.20/23,647.20 = 8,386.20/x
  3. Step 3: Cross multiply
    15,778.20x = 23,647.20 × 8,386.20
  4. Step 4: Simplify right side
    15,778.20x = 198,310,148.64
  5. Step 5: Solve for x
    x = 198,310,148.64/15,778.20
  6. Step 6: Final answer
    x = 12,568.62

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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.