Home / 12,872.95-19,308.85-3,512.94

Finding the Fourth Proportional to 12,872.95, 19,308.85 and 3,512.94

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Solution

The fourth proportional to 12,872.95, 19,308.85 and 3,512.94 is: 5,269.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.95 : 19,308.85 = 3,512.94 : x
  2. Step 2: Convert to fraction form
    12,872.95/19,308.85 = 3,512.94/x
  3. Step 3: Cross multiply
    12,872.95x = 19,308.85 × 3,512.94
  4. Step 4: Simplify right side
    12,872.95x = 67,830,814.51
  5. Step 5: Solve for x
    x = 67,830,814.51/12,872.95
  6. Step 6: Final answer
    x = 5,269.25

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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.