Home / 18,685.59-25,786.45-10,187.77

Finding the Fourth Proportional to 18,685.59, 25,786.45 and 10,187.77

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Solution

The fourth proportional to 18,685.59, 25,786.45 and 10,187.77 is: 14,059.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.59 : 25,786.45 = 10,187.77 : x
  2. Step 2: Convert to fraction form
    18,685.59/25,786.45 = 10,187.77/x
  3. Step 3: Cross multiply
    18,685.59x = 25,786.45 × 10,187.77
  4. Step 4: Simplify right side
    18,685.59x = 262,706,421.72
  5. Step 5: Solve for x
    x = 262,706,421.72/18,685.59
  6. Step 6: Final answer
    x = 14,059.31

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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.