Home / 13,486.14-20,228.70-4,125.78

Finding the Fourth Proportional to 13,486.14, 20,228.70 and 4,125.78

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Solution

The fourth proportional to 13,486.14, 20,228.70 and 4,125.78 is: 6,188.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.14 : 20,228.70 = 4,125.78 : x
  2. Step 2: Convert to fraction form
    13,486.14/20,228.70 = 4,125.78/x
  3. Step 3: Cross multiply
    13,486.14x = 20,228.70 × 4,125.78
  4. Step 4: Simplify right side
    13,486.14x = 83,459,165.89
  5. Step 5: Solve for x
    x = 83,459,165.89/13,486.14
  6. Step 6: Final answer
    x = 6,188.51

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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.