Home / 20,659.93-28,513.02-19,393.09

Finding the Fourth Proportional to 20,659.93, 28,513.02 and 19,393.09

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Solution

The fourth proportional to 20,659.93, 28,513.02 and 19,393.09 is: 26,764.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.93 : 28,513.02 = 19,393.09 : x
  2. Step 2: Convert to fraction form
    20,659.93/28,513.02 = 19,393.09/x
  3. Step 3: Cross multiply
    20,659.93x = 28,513.02 × 19,393.09
  4. Step 4: Simplify right side
    20,659.93x = 552,955,563.03
  5. Step 5: Solve for x
    x = 552,955,563.03/20,659.93
  6. Step 6: Final answer
    x = 26,764.64

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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.