Home / 18,686.51-25,789.20-13,962.59

Finding the Fourth Proportional to 18,686.51, 25,789.20 and 13,962.59

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Solution

The fourth proportional to 18,686.51, 25,789.20 and 13,962.59 is: 19,269.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.51 : 25,789.20 = 13,962.59 : x
  2. Step 2: Convert to fraction form
    18,686.51/25,789.20 = 13,962.59/x
  3. Step 3: Cross multiply
    18,686.51x = 25,789.20 × 13,962.59
  4. Step 4: Simplify right side
    18,686.51x = 360,084,026.03
  5. Step 5: Solve for x
    x = 360,084,026.03/18,686.51
  6. Step 6: Final answer
    x = 19,269.73

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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.