Home / 21,399.36-29,531.36-12,446.88

Finding the Fourth Proportional to 21,399.36, 29,531.36 and 12,446.88

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Solution

The fourth proportional to 21,399.36, 29,531.36 and 12,446.88 is: 17,176.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.36 : 29,531.36 = 12,446.88 : x
  2. Step 2: Convert to fraction form
    21,399.36/29,531.36 = 12,446.88/x
  3. Step 3: Cross multiply
    21,399.36x = 29,531.36 × 12,446.88
  4. Step 4: Simplify right side
    21,399.36x = 367,573,294.16
  5. Step 5: Solve for x
    x = 367,573,294.16/21,399.36
  6. Step 6: Final answer
    x = 17,176.84

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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.