Home / 12,784.15-19,150.68-10,156.11

Finding the Fourth Proportional to 12,784.15, 19,150.68 and 10,156.11

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Solution

The fourth proportional to 12,784.15, 19,150.68 and 10,156.11 is: 15,213.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,784.15 : 19,150.68 = 10,156.11 : x
  2. Step 2: Convert to fraction form
    12,784.15/19,150.68 = 10,156.11/x
  3. Step 3: Cross multiply
    12,784.15x = 19,150.68 × 10,156.11
  4. Step 4: Simplify right side
    12,784.15x = 194,496,412.65
  5. Step 5: Solve for x
    x = 194,496,412.65/12,784.15
  6. Step 6: Final answer
    x = 15,213.87

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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.