Home / 19,859.20-27,403.98-11,359.60

Finding the Fourth Proportional to 19,859.20, 27,403.98 and 11,359.60

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Solution

The fourth proportional to 19,859.20, 27,403.98 and 11,359.60 is: 15,675.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,859.20 : 27,403.98 = 11,359.60 : x
  2. Step 2: Convert to fraction form
    19,859.20/27,403.98 = 11,359.60/x
  3. Step 3: Cross multiply
    19,859.20x = 27,403.98 × 11,359.60
  4. Step 4: Simplify right side
    19,859.20x = 311,298,251.21
  5. Step 5: Solve for x
    x = 311,298,251.21/19,859.20
  6. Step 6: Final answer
    x = 15,675.27

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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.