Home / 13,188.64-19,784.88-3,955.36

Finding the Fourth Proportional to 13,188.64, 19,784.88 and 3,955.36

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Solution

The fourth proportional to 13,188.64, 19,784.88 and 3,955.36 is: 5,933.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.64 : 19,784.88 = 3,955.36 : x
  2. Step 2: Convert to fraction form
    13,188.64/19,784.88 = 3,955.36/x
  3. Step 3: Cross multiply
    13,188.64x = 19,784.88 × 3,955.36
  4. Step 4: Simplify right side
    13,188.64x = 78,256,322.96
  5. Step 5: Solve for x
    x = 78,256,322.96/13,188.64
  6. Step 6: Final answer
    x = 5,933.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.