Home / 21,915.97-30,244.58-13,302.25

Finding the Fourth Proportional to 21,915.97, 30,244.58 and 13,302.25

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Solution

The fourth proportional to 21,915.97, 30,244.58 and 13,302.25 is: 18,357.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.97 : 30,244.58 = 13,302.25 : x
  2. Step 2: Convert to fraction form
    21,915.97/30,244.58 = 13,302.25/x
  3. Step 3: Cross multiply
    21,915.97x = 30,244.58 × 13,302.25
  4. Step 4: Simplify right side
    21,915.97x = 402,320,964.31
  5. Step 5: Solve for x
    x = 402,320,964.31/21,915.97
  6. Step 6: Final answer
    x = 18,357.43

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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.