Home / 12,705.28-19,016.52-11,492.80

Finding the Fourth Proportional to 12,705.28, 19,016.52 and 11,492.80

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Solution

The fourth proportional to 12,705.28, 19,016.52 and 11,492.80 is: 17,201.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,705.28 : 19,016.52 = 11,492.80 : x
  2. Step 2: Convert to fraction form
    12,705.28/19,016.52 = 11,492.80/x
  3. Step 3: Cross multiply
    12,705.28x = 19,016.52 × 11,492.80
  4. Step 4: Simplify right side
    12,705.28x = 218,553,061.06
  5. Step 5: Solve for x
    x = 218,553,061.06/12,705.28
  6. Step 6: Final answer
    x = 17,201.75

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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.