Home / 13,459.75-20,189.81-4,225.75

Finding the Fourth Proportional to 13,459.75, 20,189.81 and 4,225.75

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Solution

The fourth proportional to 13,459.75, 20,189.81 and 4,225.75 is: 6,338.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.75 : 20,189.81 = 4,225.75 : x
  2. Step 2: Convert to fraction form
    13,459.75/20,189.81 = 4,225.75/x
  3. Step 3: Cross multiply
    13,459.75x = 20,189.81 × 4,225.75
  4. Step 4: Simplify right side
    13,459.75x = 85,317,089.61
  5. Step 5: Solve for x
    x = 85,317,089.61/13,459.75
  6. Step 6: Final answer
    x = 6,338.68

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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.