Home / 14,487.12-19,991.16-8,199.36

Finding the Fourth Proportional to 14,487.12, 19,991.16 and 8,199.36

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Solution

The fourth proportional to 14,487.12, 19,991.16 and 8,199.36 is: 11,314.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.12 : 19,991.16 = 8,199.36 : x
  2. Step 2: Convert to fraction form
    14,487.12/19,991.16 = 8,199.36/x
  3. Step 3: Cross multiply
    14,487.12x = 19,991.16 × 8,199.36
  4. Step 4: Simplify right side
    14,487.12x = 163,914,717.66
  5. Step 5: Solve for x
    x = 163,914,717.66/14,487.12
  6. Step 6: Final answer
    x = 11,314.51

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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.