Home / 20,276.51-27,778.35-19,518.43

Finding the Fourth Proportional to 20,276.51, 27,778.35 and 19,518.43

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Solution

The fourth proportional to 20,276.51, 27,778.35 and 19,518.43 is: 26,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.51 : 27,778.35 = 19,518.43 : x
  2. Step 2: Convert to fraction form
    20,276.51/27,778.35 = 19,518.43/x
  3. Step 3: Cross multiply
    20,276.51x = 27,778.35 × 19,518.43
  4. Step 4: Simplify right side
    20,276.51x = 542,189,667.61
  5. Step 5: Solve for x
    x = 542,189,667.61/20,276.51
  6. Step 6: Final answer
    x = 26,739.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.