Home / 12,656.64-18,984.96-3,891.36

Finding the Fourth Proportional to 12,656.64, 18,984.96 and 3,891.36

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Solution

The fourth proportional to 12,656.64, 18,984.96 and 3,891.36 is: 5,837.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.64 : 18,984.96 = 3,891.36 : x
  2. Step 2: Convert to fraction form
    12,656.64/18,984.96 = 3,891.36/x
  3. Step 3: Cross multiply
    12,656.64x = 18,984.96 × 3,891.36
  4. Step 4: Simplify right side
    12,656.64x = 73,877,313.95
  5. Step 5: Solve for x
    x = 73,877,313.95/12,656.64
  6. Step 6: Final answer
    x = 5,837.04

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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.