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Finding the Fourth Proportional to 18,361.22, 27,536.91 and 7,970.50

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Solution

The fourth proportional to 18,361.22, 27,536.91 and 7,970.50 is: 11,953.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.22 : 27,536.91 = 7,970.50 : x
  2. Step 2: Convert to fraction form
    18,361.22/27,536.91 = 7,970.50/x
  3. Step 3: Cross multiply
    18,361.22x = 27,536.91 × 7,970.50
  4. Step 4: Simplify right side
    18,361.22x = 219,482,941.16
  5. Step 5: Solve for x
    x = 219,482,941.16/18,361.22
  6. Step 6: Final answer
    x = 11,953.61

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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.