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Finding the Fourth Proportional to 15,964.41, 21,994.17 and 12,605.99

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Solution

The fourth proportional to 15,964.41, 21,994.17 and 12,605.99 is: 17,367.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,964.41 : 21,994.17 = 12,605.99 : x
  2. Step 2: Convert to fraction form
    15,964.41/21,994.17 = 12,605.99/x
  3. Step 3: Cross multiply
    15,964.41x = 21,994.17 × 12,605.99
  4. Step 4: Simplify right side
    15,964.41x = 277,258,287.08
  5. Step 5: Solve for x
    x = 277,258,287.08/15,964.41
  6. Step 6: Final answer
    x = 17,367.27

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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.