Home / 12,285.50-16,948.66-7,806.85

Finding the Fourth Proportional to 12,285.50, 16,948.66 and 7,806.85

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Solution

The fourth proportional to 12,285.50, 16,948.66 and 7,806.85 is: 10,770.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.50 : 16,948.66 = 7,806.85 : x
  2. Step 2: Convert to fraction form
    12,285.50/16,948.66 = 7,806.85/x
  3. Step 3: Cross multiply
    12,285.50x = 16,948.66 × 7,806.85
  4. Step 4: Simplify right side
    12,285.50x = 132,315,646.32
  5. Step 5: Solve for x
    x = 132,315,646.32/12,285.50
  6. Step 6: Final answer
    x = 10,770.07

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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.