Home / 20,896.74-28,827.08-12,395.12

Finding the Fourth Proportional to 20,896.74, 28,827.08 and 12,395.12

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Solution

The fourth proportional to 20,896.74, 28,827.08 and 12,395.12 is: 17,099.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.74 : 28,827.08 = 12,395.12 : x
  2. Step 2: Convert to fraction form
    20,896.74/28,827.08 = 12,395.12/x
  3. Step 3: Cross multiply
    20,896.74x = 28,827.08 × 12,395.12
  4. Step 4: Simplify right side
    20,896.74x = 357,315,115.85
  5. Step 5: Solve for x
    x = 357,315,115.85/20,896.74
  6. Step 6: Final answer
    x = 17,099.08

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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.