Home / 12,210.15-18,291.57-6,929.19

Finding the Fourth Proportional to 12,210.15, 18,291.57 and 6,929.19

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Solution

The fourth proportional to 12,210.15, 18,291.57 and 6,929.19 is: 10,380.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.15 : 18,291.57 = 6,929.19 : x
  2. Step 2: Convert to fraction form
    12,210.15/18,291.57 = 6,929.19/x
  3. Step 3: Cross multiply
    12,210.15x = 18,291.57 × 6,929.19
  4. Step 4: Simplify right side
    12,210.15x = 126,745,763.93
  5. Step 5: Solve for x
    x = 126,745,763.93/12,210.15
  6. Step 6: Final answer
    x = 10,380.36

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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.