Home / 21,283.94-31,961.50-13,297.30

Finding the Fourth Proportional to 21,283.94, 31,961.50 and 13,297.30

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Solution

The fourth proportional to 21,283.94, 31,961.50 and 13,297.30 is: 19,968.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.94 : 31,961.50 = 13,297.30 : x
  2. Step 2: Convert to fraction form
    21,283.94/31,961.50 = 13,297.30/x
  3. Step 3: Cross multiply
    21,283.94x = 31,961.50 × 13,297.30
  4. Step 4: Simplify right side
    21,283.94x = 425,001,540.80
  5. Step 5: Solve for x
    x = 425,001,540.80/21,283.94
  6. Step 6: Final answer
    x = 19,968.18

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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.