Home / 12,080.74-16,688.28-11,450.20

Finding the Fourth Proportional to 12,080.74, 16,688.28 and 11,450.20

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Solution

The fourth proportional to 12,080.74, 16,688.28 and 11,450.20 is: 15,817.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080.74 : 16,688.28 = 11,450.20 : x
  2. Step 2: Convert to fraction form
    12,080.74/16,688.28 = 11,450.20/x
  3. Step 3: Cross multiply
    12,080.74x = 16,688.28 × 11,450.20
  4. Step 4: Simplify right side
    12,080.74x = 191,084,143.66
  5. Step 5: Solve for x
    x = 191,084,143.66/12,080.74
  6. Step 6: Final answer
    x = 15,817.25

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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.