Home / 21,540.98-32,100.04-20,836.28

Finding the Fourth Proportional to 21,540.98, 32,100.04 and 20,836.28

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Solution

The fourth proportional to 21,540.98, 32,100.04 and 20,836.28 is: 31,049.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.98 : 32,100.04 = 20,836.28 : x
  2. Step 2: Convert to fraction form
    21,540.98/32,100.04 = 20,836.28/x
  3. Step 3: Cross multiply
    21,540.98x = 32,100.04 × 20,836.28
  4. Step 4: Simplify right side
    21,540.98x = 668,845,421.45
  5. Step 5: Solve for x
    x = 668,845,421.45/21,540.98
  6. Step 6: Final answer
    x = 31,049.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.