Home / 19,854.12-27,393.54-11,890.74

Finding the Fourth Proportional to 19,854.12, 27,393.54 and 11,890.74

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Solution

The fourth proportional to 19,854.12, 27,393.54 and 11,890.74 is: 16,406.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,854.12 : 27,393.54 = 11,890.74 : x
  2. Step 2: Convert to fraction form
    19,854.12/27,393.54 = 11,890.74/x
  3. Step 3: Cross multiply
    19,854.12x = 27,393.54 × 11,890.74
  4. Step 4: Simplify right side
    19,854.12x = 325,729,461.82
  5. Step 5: Solve for x
    x = 325,729,461.82/19,854.12
  6. Step 6: Final answer
    x = 16,406.14

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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.