Home / 21,832.14-30,126.56-12,880.02

Finding the Fourth Proportional to 21,832.14, 30,126.56 and 12,880.02

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Solution

The fourth proportional to 21,832.14, 30,126.56 and 12,880.02 is: 17,773.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.14 : 30,126.56 = 12,880.02 : x
  2. Step 2: Convert to fraction form
    21,832.14/30,126.56 = 12,880.02/x
  3. Step 3: Cross multiply
    21,832.14x = 30,126.56 × 12,880.02
  4. Step 4: Simplify right side
    21,832.14x = 388,030,630.93
  5. Step 5: Solve for x
    x = 388,030,630.93/21,832.14
  6. Step 6: Final answer
    x = 17,773.37

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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.