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Finding the Fourth Proportional to 13,501.29, 20,185.30 and 11,444.29

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Solution

The fourth proportional to 13,501.29, 20,185.30 and 11,444.29 is: 17,109.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,501.29 : 20,185.30 = 11,444.29 : x
  2. Step 2: Convert to fraction form
    13,501.29/20,185.30 = 11,444.29/x
  3. Step 3: Cross multiply
    13,501.29x = 20,185.30 × 11,444.29
  4. Step 4: Simplify right side
    13,501.29x = 231,006,426.94
  5. Step 5: Solve for x
    x = 231,006,426.94/13,501.29
  6. Step 6: Final answer
    x = 17,109.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.