Home / 12,938.57-19,407.86-4,173.49

Finding the Fourth Proportional to 12,938.57, 19,407.86 and 4,173.49

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Solution

The fourth proportional to 12,938.57, 19,407.86 and 4,173.49 is: 6,260.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.57 : 19,407.86 = 4,173.49 : x
  2. Step 2: Convert to fraction form
    12,938.57/19,407.86 = 4,173.49/x
  3. Step 3: Cross multiply
    12,938.57x = 19,407.86 × 4,173.49
  4. Step 4: Simplify right side
    12,938.57x = 80,998,471.55
  5. Step 5: Solve for x
    x = 80,998,471.55/12,938.57
  6. Step 6: Final answer
    x = 6,260.23

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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.