Home / 13,840.86-19,100.39-8,538.76

Finding the Fourth Proportional to 13,840.86, 19,100.39 and 8,538.76

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Solution

The fourth proportional to 13,840.86, 19,100.39 and 8,538.76 is: 11,783.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.86 : 19,100.39 = 8,538.76 : x
  2. Step 2: Convert to fraction form
    13,840.86/19,100.39 = 8,538.76/x
  3. Step 3: Cross multiply
    13,840.86x = 19,100.39 × 8,538.76
  4. Step 4: Simplify right side
    13,840.86x = 163,093,507.92
  5. Step 5: Solve for x
    x = 163,093,507.92/13,840.86
  6. Step 6: Final answer
    x = 11,783.48

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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.