Home / 13,584.85-18,748.32-7,919.16

Finding the Fourth Proportional to 13,584.85, 18,748.32 and 7,919.16

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Solution

The fourth proportional to 13,584.85, 18,748.32 and 7,919.16 is: 10,929.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,584.85 : 18,748.32 = 7,919.16 : x
  2. Step 2: Convert to fraction form
    13,584.85/18,748.32 = 7,919.16/x
  3. Step 3: Cross multiply
    13,584.85x = 18,748.32 × 7,919.16
  4. Step 4: Simplify right side
    13,584.85x = 148,470,945.81
  5. Step 5: Solve for x
    x = 148,470,945.81/13,584.85
  6. Step 6: Final answer
    x = 10,929.16

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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.