Home / 13,356.64-18,431.84-7,388.96

Finding the Fourth Proportional to 13,356.64, 18,431.84 and 7,388.96

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Solution

The fourth proportional to 13,356.64, 18,431.84 and 7,388.96 is: 10,196.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.64 : 18,431.84 = 7,388.96 : x
  2. Step 2: Convert to fraction form
    13,356.64/18,431.84 = 7,388.96/x
  3. Step 3: Cross multiply
    13,356.64x = 18,431.84 × 7,388.96
  4. Step 4: Simplify right side
    13,356.64x = 136,192,128.49
  5. Step 5: Solve for x
    x = 136,192,128.49/13,356.64
  6. Step 6: Final answer
    x = 10,196.59

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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.