Home / 21,968.08-30,318.60-12,538.24

Finding the Fourth Proportional to 21,968.08, 30,318.60 and 12,538.24

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Solution

The fourth proportional to 21,968.08, 30,318.60 and 12,538.24 is: 17,304.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.08 : 30,318.60 = 12,538.24 : x
  2. Step 2: Convert to fraction form
    21,968.08/30,318.60 = 12,538.24/x
  3. Step 3: Cross multiply
    21,968.08x = 30,318.60 × 12,538.24
  4. Step 4: Simplify right side
    21,968.08x = 380,141,883.26
  5. Step 5: Solve for x
    x = 380,141,883.26/21,968.08
  6. Step 6: Final answer
    x = 17,304.28

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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.