Home / 13,657.23-18,847.32-7,689.11

Finding the Fourth Proportional to 13,657.23, 18,847.32 and 7,689.11

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Solution

The fourth proportional to 13,657.23, 18,847.32 and 7,689.11 is: 10,611.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.23 : 18,847.32 = 7,689.11 : x
  2. Step 2: Convert to fraction form
    13,657.23/18,847.32 = 7,689.11/x
  3. Step 3: Cross multiply
    13,657.23x = 18,847.32 × 7,689.11
  4. Step 4: Simplify right side
    13,657.23x = 144,919,121.96
  5. Step 5: Solve for x
    x = 144,919,121.96/13,657.23
  6. Step 6: Final answer
    x = 10,611.17

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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.