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Finding the Fourth Proportional to 13,660.14, 18,853.95 and 8,071.98

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Solution

The fourth proportional to 13,660.14, 18,853.95 and 8,071.98 is: 11,141.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.14 : 18,853.95 = 8,071.98 : x
  2. Step 2: Convert to fraction form
    13,660.14/18,853.95 = 8,071.98/x
  3. Step 3: Cross multiply
    13,660.14x = 18,853.95 × 8,071.98
  4. Step 4: Simplify right side
    13,660.14x = 152,188,707.32
  5. Step 5: Solve for x
    x = 152,188,707.32/13,660.14
  6. Step 6: Final answer
    x = 11,141.08

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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.