Home / 19,987.14-27,592.80-12,917.58

Finding the Fourth Proportional to 19,987.14, 27,592.80 and 12,917.58

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Solution

The fourth proportional to 19,987.14, 27,592.80 and 12,917.58 is: 17,833.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.14 : 27,592.80 = 12,917.58 : x
  2. Step 2: Convert to fraction form
    19,987.14/27,592.80 = 12,917.58/x
  3. Step 3: Cross multiply
    19,987.14x = 27,592.80 × 12,917.58
  4. Step 4: Simplify right side
    19,987.14x = 356,432,201.42
  5. Step 5: Solve for x
    x = 356,432,201.42/19,987.14
  6. Step 6: Final answer
    x = 17,833.08

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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.