Home / 19,854.14-27,393.60-11,890.70

Finding the Fourth Proportional to 19,854.14, 27,393.60 and 11,890.70

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Solution

The fourth proportional to 19,854.14, 27,393.60 and 11,890.70 is: 16,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,854.14 : 27,393.60 = 11,890.70 : x
  2. Step 2: Convert to fraction form
    19,854.14/27,393.60 = 11,890.70/x
  3. Step 3: Cross multiply
    19,854.14x = 27,393.60 × 11,890.70
  4. Step 4: Simplify right side
    19,854.14x = 325,729,079.52
  5. Step 5: Solve for x
    x = 325,729,079.52/19,854.14
  6. Step 6: Final answer
    x = 16,406.10

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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.