Home / 13,906.64-19,190.60-8,320.72

Finding the Fourth Proportional to 13,906.64, 19,190.60 and 8,320.72

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Solution

The fourth proportional to 13,906.64, 19,190.60 and 8,320.72 is: 11,482.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.64 : 19,190.60 = 8,320.72 : x
  2. Step 2: Convert to fraction form
    13,906.64/19,190.60 = 8,320.72/x
  3. Step 3: Cross multiply
    13,906.64x = 19,190.60 × 8,320.72
  4. Step 4: Simplify right side
    13,906.64x = 159,679,609.23
  5. Step 5: Solve for x
    x = 159,679,609.23/13,906.64
  6. Step 6: Final answer
    x = 11,482.26

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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.