Home / 8,199.90-12,324.15-7,130.70

Finding the Fourth Proportional to 8,199.90, 12,324.15 and 7,130.70

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Solution

The fourth proportional to 8,199.90, 12,324.15 and 7,130.70 is: 10,717.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,199.90 : 12,324.15 = 7,130.70 : x
  2. Step 2: Convert to fraction form
    8,199.90/12,324.15 = 7,130.70/x
  3. Step 3: Cross multiply
    8,199.90x = 12,324.15 × 7,130.70
  4. Step 4: Simplify right side
    8,199.90x = 87,879,816.41
  5. Step 5: Solve for x
    x = 87,879,816.41/8,199.90
  6. Step 6: Final answer
    x = 10,717.18

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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.