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Finding the Fourth Proportional to 17,611.80, 26,411.02 and 5,127.68

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Solution

The fourth proportional to 17,611.80, 26,411.02 and 5,127.68 is: 7,689.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,611.80 : 26,411.02 = 5,127.68 : x
  2. Step 2: Convert to fraction form
    17,611.80/26,411.02 = 5,127.68/x
  3. Step 3: Cross multiply
    17,611.80x = 26,411.02 × 5,127.68
  4. Step 4: Simplify right side
    17,611.80x = 135,427,259.03
  5. Step 5: Solve for x
    x = 135,427,259.03/17,611.80
  6. Step 6: Final answer
    x = 7,689.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.