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Finding the Fourth Proportional to 13,764.61, 18,995.05 and 7,476.98

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Solution

The fourth proportional to 13,764.61, 18,995.05 and 7,476.98 is: 10,318.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764.61 : 18,995.05 = 7,476.98 : x
  2. Step 2: Convert to fraction form
    13,764.61/18,995.05 = 7,476.98/x
  3. Step 3: Cross multiply
    13,764.61x = 18,995.05 × 7,476.98
  4. Step 4: Simplify right side
    13,764.61x = 142,025,608.95
  5. Step 5: Solve for x
    x = 142,025,608.95/13,764.61
  6. Step 6: Final answer
    x = 10,318.17

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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.