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Finding the Fourth Proportional to 12,259.71, 18,386.14 and 4,361.22

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Solution

The fourth proportional to 12,259.71, 18,386.14 and 4,361.22 is: 6,540.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,259.71 : 18,386.14 = 4,361.22 : x
  2. Step 2: Convert to fraction form
    12,259.71/18,386.14 = 4,361.22/x
  3. Step 3: Cross multiply
    12,259.71x = 18,386.14 × 4,361.22
  4. Step 4: Simplify right side
    12,259.71x = 80,186,001.49
  5. Step 5: Solve for x
    x = 80,186,001.49/12,259.71
  6. Step 6: Final answer
    x = 6,540.61

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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.