Home / 20,881.74-28,817.46-11,451.18

Finding the Fourth Proportional to 20,881.74, 28,817.46 and 11,451.18

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Solution

The fourth proportional to 20,881.74, 28,817.46 and 11,451.18 is: 15,802.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.74 : 28,817.46 = 11,451.18 : x
  2. Step 2: Convert to fraction form
    20,881.74/28,817.46 = 11,451.18/x
  3. Step 3: Cross multiply
    20,881.74x = 28,817.46 × 11,451.18
  4. Step 4: Simplify right side
    20,881.74x = 329,993,921.60
  5. Step 5: Solve for x
    x = 329,993,921.60/20,881.74
  6. Step 6: Final answer
    x = 15,802.99

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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.