Home / 13,319.85-18,380.76-7,650.62

Finding the Fourth Proportional to 13,319.85, 18,380.76 and 7,650.62

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Solution

The fourth proportional to 13,319.85, 18,380.76 and 7,650.62 is: 10,557.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.85 : 18,380.76 = 7,650.62 : x
  2. Step 2: Convert to fraction form
    13,319.85/18,380.76 = 7,650.62/x
  3. Step 3: Cross multiply
    13,319.85x = 18,380.76 × 7,650.62
  4. Step 4: Simplify right side
    13,319.85x = 140,624,118.17
  5. Step 5: Solve for x
    x = 140,624,118.17/13,319.85
  6. Step 6: Final answer
    x = 10,557.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.