Home / 12,215.68-16,847.22-9,389.90

Finding the Fourth Proportional to 12,215.68, 16,847.22 and 9,389.90

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Solution

The fourth proportional to 12,215.68, 16,847.22 and 9,389.90 is: 12,950.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.68 : 16,847.22 = 9,389.90 : x
  2. Step 2: Convert to fraction form
    12,215.68/16,847.22 = 9,389.90/x
  3. Step 3: Cross multiply
    12,215.68x = 16,847.22 × 9,389.90
  4. Step 4: Simplify right side
    12,215.68x = 158,193,711.08
  5. Step 5: Solve for x
    x = 158,193,711.08/12,215.68
  6. Step 6: Final answer
    x = 12,950.05

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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.