Home / 12,936.16-19,400.40-10,856.80

Finding the Fourth Proportional to 12,936.16, 19,400.40 and 10,856.80

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Solution

The fourth proportional to 12,936.16, 19,400.40 and 10,856.80 is: 16,281.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.16 : 19,400.40 = 10,856.80 : x
  2. Step 2: Convert to fraction form
    12,936.16/19,400.40 = 10,856.80/x
  3. Step 3: Cross multiply
    12,936.16x = 19,400.40 × 10,856.80
  4. Step 4: Simplify right side
    12,936.16x = 210,626,262.72
  5. Step 5: Solve for x
    x = 210,626,262.72/12,936.16
  6. Step 6: Final answer
    x = 16,281.98

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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.