Home / 12,108.96-16,705.44-11,275.20

Finding the Fourth Proportional to 12,108.96, 16,705.44 and 11,275.20

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Solution

The fourth proportional to 12,108.96, 16,705.44 and 11,275.20 is: 15,555.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.96 : 16,705.44 = 11,275.20 : x
  2. Step 2: Convert to fraction form
    12,108.96/16,705.44 = 11,275.20/x
  3. Step 3: Cross multiply
    12,108.96x = 16,705.44 × 11,275.20
  4. Step 4: Simplify right side
    12,108.96x = 188,357,177.09
  5. Step 5: Solve for x
    x = 188,357,177.09/12,108.96
  6. Step 6: Final answer
    x = 15,555.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.