Home / 13,099.12-19,645.28-4,777.68

Finding the Fourth Proportional to 13,099.12, 19,645.28 and 4,777.68

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Solution

The fourth proportional to 13,099.12, 19,645.28 and 4,777.68 is: 7,165.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.12 : 19,645.28 = 4,777.68 : x
  2. Step 2: Convert to fraction form
    13,099.12/19,645.28 = 4,777.68/x
  3. Step 3: Cross multiply
    13,099.12x = 19,645.28 × 4,777.68
  4. Step 4: Simplify right side
    13,099.12x = 93,858,861.35
  5. Step 5: Solve for x
    x = 93,858,861.35/13,099.12
  6. Step 6: Final answer
    x = 7,165.28

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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.