Home / 12,687.39-19,026.90-4,367.21

Finding the Fourth Proportional to 12,687.39, 19,026.90 and 4,367.21

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Solution

The fourth proportional to 12,687.39, 19,026.90 and 4,367.21 is: 6,549.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.39 : 19,026.90 = 4,367.21 : x
  2. Step 2: Convert to fraction form
    12,687.39/19,026.90 = 4,367.21/x
  3. Step 3: Cross multiply
    12,687.39x = 19,026.90 × 4,367.21
  4. Step 4: Simplify right side
    12,687.39x = 83,094,372.81
  5. Step 5: Solve for x
    x = 83,094,372.81/12,687.39
  6. Step 6: Final answer
    x = 6,549.37

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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.