Home / 21,389.08-29,517.03-11,957.44

Finding the Fourth Proportional to 21,389.08, 29,517.03 and 11,957.44

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Solution

The fourth proportional to 21,389.08, 29,517.03 and 11,957.44 is: 16,501.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.08 : 29,517.03 = 11,957.44 : x
  2. Step 2: Convert to fraction form
    21,389.08/29,517.03 = 11,957.44/x
  3. Step 3: Cross multiply
    21,389.08x = 29,517.03 × 11,957.44
  4. Step 4: Simplify right side
    21,389.08x = 352,948,115.20
  5. Step 5: Solve for x
    x = 352,948,115.20/21,389.08
  6. Step 6: Final answer
    x = 16,501.32

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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.