Home / 13,511.03-20,252.69-5,188.81

Finding the Fourth Proportional to 13,511.03, 20,252.69 and 5,188.81

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Solution

The fourth proportional to 13,511.03, 20,252.69 and 5,188.81 is: 7,777.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.03 : 20,252.69 = 5,188.81 : x
  2. Step 2: Convert to fraction form
    13,511.03/20,252.69 = 5,188.81/x
  3. Step 3: Cross multiply
    13,511.03x = 20,252.69 × 5,188.81
  4. Step 4: Simplify right side
    13,511.03x = 105,087,233.19
  5. Step 5: Solve for x
    x = 105,087,233.19/13,511.03
  6. Step 6: Final answer
    x = 7,777.88

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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.