Home / 12,808.20-19,212.30-7,537.80

Finding the Fourth Proportional to 12,808.20, 19,212.30 and 7,537.80

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Solution

The fourth proportional to 12,808.20, 19,212.30 and 7,537.80 is: 11,306.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.20 : 19,212.30 = 7,537.80 : x
  2. Step 2: Convert to fraction form
    12,808.20/19,212.30 = 7,537.80/x
  3. Step 3: Cross multiply
    12,808.20x = 19,212.30 × 7,537.80
  4. Step 4: Simplify right side
    12,808.20x = 144,818,474.94
  5. Step 5: Solve for x
    x = 144,818,474.94/12,808.20
  6. Step 6: Final answer
    x = 11,306.70

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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.