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Finding the Fourth Proportional to 13,652.15, 20,486.19 and 5,754.18

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Solution

The fourth proportional to 13,652.15, 20,486.19 and 5,754.18 is: 8,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,652.15 : 20,486.19 = 5,754.18 : x
  2. Step 2: Convert to fraction form
    13,652.15/20,486.19 = 5,754.18/x
  3. Step 3: Cross multiply
    13,652.15x = 20,486.19 × 5,754.18
  4. Step 4: Simplify right side
    13,652.15x = 117,881,290.81
  5. Step 5: Solve for x
    x = 117,881,290.81/13,652.15
  6. Step 6: Final answer
    x = 8,634.63

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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.