Home / 12,861.12-19,292.32-6,292.80

Finding the Fourth Proportional to 12,861.12, 19,292.32 and 6,292.80

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Solution

The fourth proportional to 12,861.12, 19,292.32 and 6,292.80 is: 9,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.12 : 19,292.32 = 6,292.80 : x
  2. Step 2: Convert to fraction form
    12,861.12/19,292.32 = 6,292.80/x
  3. Step 3: Cross multiply
    12,861.12x = 19,292.32 × 6,292.80
  4. Step 4: Simplify right side
    12,861.12x = 121,402,711.30
  5. Step 5: Solve for x
    x = 121,402,711.30/12,861.12
  6. Step 6: Final answer
    x = 9,439.51

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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.