Home / 12,865.92-19,395.30-12,008.63

Finding the Fourth Proportional to 12,865.92, 19,395.30 and 12,008.63

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Solution

The fourth proportional to 12,865.92, 19,395.30 and 12,008.63 is: 18,102.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.92 : 19,395.30 = 12,008.63 : x
  2. Step 2: Convert to fraction form
    12,865.92/19,395.30 = 12,008.63/x
  3. Step 3: Cross multiply
    12,865.92x = 19,395.30 × 12,008.63
  4. Step 4: Simplify right side
    12,865.92x = 232,910,981.44
  5. Step 5: Solve for x
    x = 232,910,981.44/12,865.92
  6. Step 6: Final answer
    x = 18,102.94

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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.