Home / 13,873.77-19,145.97-7,905.56

Finding the Fourth Proportional to 13,873.77, 19,145.97 and 7,905.56

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Solution

The fourth proportional to 13,873.77, 19,145.97 and 7,905.56 is: 10,909.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,873.77 : 19,145.97 = 7,905.56 : x
  2. Step 2: Convert to fraction form
    13,873.77/19,145.97 = 7,905.56/x
  3. Step 3: Cross multiply
    13,873.77x = 19,145.97 × 7,905.56
  4. Step 4: Simplify right side
    13,873.77x = 151,359,518.86
  5. Step 5: Solve for x
    x = 151,359,518.86/13,873.77
  6. Step 6: Final answer
    x = 10,909.76

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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.