Home / 12,172.52-18,259.24-3,407.21

Finding the Fourth Proportional to 12,172.52, 18,259.24 and 3,407.21

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Solution

The fourth proportional to 12,172.52, 18,259.24 and 3,407.21 is: 5,110.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.52 : 18,259.24 = 3,407.21 : x
  2. Step 2: Convert to fraction form
    12,172.52/18,259.24 = 3,407.21/x
  3. Step 3: Cross multiply
    12,172.52x = 18,259.24 × 3,407.21
  4. Step 4: Simplify right side
    12,172.52x = 62,212,956.79
  5. Step 5: Solve for x
    x = 62,212,956.79/12,172.52
  6. Step 6: Final answer
    x = 5,110.93

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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.