Home / 14,352.89-19,811.12-8,687.66

Finding the Fourth Proportional to 14,352.89, 19,811.12 and 8,687.66

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Solution

The fourth proportional to 14,352.89, 19,811.12 and 8,687.66 is: 11,991.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,352.89 : 19,811.12 = 8,687.66 : x
  2. Step 2: Convert to fraction form
    14,352.89/19,811.12 = 8,687.66/x
  3. Step 3: Cross multiply
    14,352.89x = 19,811.12 × 8,687.66
  4. Step 4: Simplify right side
    14,352.89x = 172,112,132.29
  5. Step 5: Solve for x
    x = 172,112,132.29/14,352.89
  6. Step 6: Final answer
    x = 11,991.47

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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.