Home / 21,310.40-31,965.56-5,728.03

Finding the Fourth Proportional to 21,310.40, 31,965.56 and 5,728.03

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Solution

The fourth proportional to 21,310.40, 31,965.56 and 5,728.03 is: 8,592.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.40 : 31,965.56 = 5,728.03 : x
  2. Step 2: Convert to fraction form
    21,310.40/31,965.56 = 5,728.03/x
  3. Step 3: Cross multiply
    21,310.40x = 31,965.56 × 5,728.03
  4. Step 4: Simplify right side
    21,310.40x = 183,099,498.18
  5. Step 5: Solve for x
    x = 183,099,498.18/21,310.40
  6. Step 6: Final answer
    x = 8,592.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.