Home / 12,936.48-19,390.68-8,492.28

Finding the Fourth Proportional to 12,936.48, 19,390.68 and 8,492.28

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Solution

The fourth proportional to 12,936.48, 19,390.68 and 8,492.28 is: 12,729.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.48 : 19,390.68 = 8,492.28 : x
  2. Step 2: Convert to fraction form
    12,936.48/19,390.68 = 8,492.28/x
  3. Step 3: Cross multiply
    12,936.48x = 19,390.68 × 8,492.28
  4. Step 4: Simplify right side
    12,936.48x = 164,671,083.95
  5. Step 5: Solve for x
    x = 164,671,083.95/12,936.48
  6. Step 6: Final answer
    x = 12,729.20

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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.