Home / 13,116.11-18,106.94-8,889.50

Finding the Fourth Proportional to 13,116.11, 18,106.94 and 8,889.50

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Solution

The fourth proportional to 13,116.11, 18,106.94 and 8,889.50 is: 12,272.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.11 : 18,106.94 = 8,889.50 : x
  2. Step 2: Convert to fraction form
    13,116.11/18,106.94 = 8,889.50/x
  3. Step 3: Cross multiply
    13,116.11x = 18,106.94 × 8,889.50
  4. Step 4: Simplify right side
    13,116.11x = 160,961,643.13
  5. Step 5: Solve for x
    x = 160,961,643.13/13,116.11
  6. Step 6: Final answer
    x = 12,272.06

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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.