Home / 18,838.77-25,987.70-11,177.60

Finding the Fourth Proportional to 18,838.77, 25,987.70 and 11,177.60

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Solution

The fourth proportional to 18,838.77, 25,987.70 and 11,177.60 is: 15,419.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.77 : 25,987.70 = 11,177.60 : x
  2. Step 2: Convert to fraction form
    18,838.77/25,987.70 = 11,177.60/x
  3. Step 3: Cross multiply
    18,838.77x = 25,987.70 × 11,177.60
  4. Step 4: Simplify right side
    18,838.77x = 290,479,929.69
  5. Step 5: Solve for x
    x = 290,479,929.69/18,838.77
  6. Step 6: Final answer
    x = 15,419.26

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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.