Home / 13,424.84-20,113.11-12,634.18

Finding the Fourth Proportional to 13,424.84, 20,113.11 and 12,634.18

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Solution

The fourth proportional to 13,424.84, 20,113.11 and 12,634.18 is: 18,928.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.84 : 20,113.11 = 12,634.18 : x
  2. Step 2: Convert to fraction form
    13,424.84/20,113.11 = 12,634.18/x
  3. Step 3: Cross multiply
    13,424.84x = 20,113.11 × 12,634.18
  4. Step 4: Simplify right side
    13,424.84x = 254,112,601.82
  5. Step 5: Solve for x
    x = 254,112,601.82/13,424.84
  6. Step 6: Final answer
    x = 18,928.54

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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.