Home / 12,890.22-19,423.12-10,601.49

Finding the Fourth Proportional to 12,890.22, 19,423.12 and 10,601.49

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Solution

The fourth proportional to 12,890.22, 19,423.12 and 10,601.49 is: 15,974.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.22 : 19,423.12 = 10,601.49 : x
  2. Step 2: Convert to fraction form
    12,890.22/19,423.12 = 10,601.49/x
  3. Step 3: Cross multiply
    12,890.22x = 19,423.12 × 10,601.49
  4. Step 4: Simplify right side
    12,890.22x = 205,914,012.45
  5. Step 5: Solve for x
    x = 205,914,012.45/12,890.22
  6. Step 6: Final answer
    x = 15,974.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.