Home / 12,935.40-19,403.51-4,170.39

Finding the Fourth Proportional to 12,935.40, 19,403.51 and 4,170.39

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Solution

The fourth proportional to 12,935.40, 19,403.51 and 4,170.39 is: 6,255.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,935.40 : 19,403.51 = 4,170.39 : x
  2. Step 2: Convert to fraction form
    12,935.40/19,403.51 = 4,170.39/x
  3. Step 3: Cross multiply
    12,935.40x = 19,403.51 × 4,170.39
  4. Step 4: Simplify right side
    12,935.40x = 80,920,183.22
  5. Step 5: Solve for x
    x = 80,920,183.22/12,935.40
  6. Step 6: Final answer
    x = 6,255.72

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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.