Home / 13,509.96-18,643.24-8,476.88

Finding the Fourth Proportional to 13,509.96, 18,643.24 and 8,476.88

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Solution

The fourth proportional to 13,509.96, 18,643.24 and 8,476.88 is: 11,697.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.96 : 18,643.24 = 8,476.88 : x
  2. Step 2: Convert to fraction form
    13,509.96/18,643.24 = 8,476.88/x
  3. Step 3: Cross multiply
    13,509.96x = 18,643.24 × 8,476.88
  4. Step 4: Simplify right side
    13,509.96x = 158,036,508.29
  5. Step 5: Solve for x
    x = 158,036,508.29/13,509.96
  6. Step 6: Final answer
    x = 11,697.78

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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.