Home / 12,319.92-18,396.24-9,792.72

Finding the Fourth Proportional to 12,319.92, 18,396.24 and 9,792.72

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Solution

The fourth proportional to 12,319.92, 18,396.24 and 9,792.72 is: 14,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.92 : 18,396.24 = 9,792.72 : x
  2. Step 2: Convert to fraction form
    12,319.92/18,396.24 = 9,792.72/x
  3. Step 3: Cross multiply
    12,319.92x = 18,396.24 × 9,792.72
  4. Step 4: Simplify right side
    12,319.92x = 180,149,227.37
  5. Step 5: Solve for x
    x = 180,149,227.37/12,319.92
  6. Step 6: Final answer
    x = 14,622.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.