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Finding the Fourth Proportional to 15,578.34, 21,498.22 and 8,504.34

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Solution

The fourth proportional to 15,578.34, 21,498.22 and 8,504.34 is: 11,736.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.34 : 21,498.22 = 8,504.34 : x
  2. Step 2: Convert to fraction form
    15,578.34/21,498.22 = 8,504.34/x
  3. Step 3: Cross multiply
    15,578.34x = 21,498.22 × 8,504.34
  4. Step 4: Simplify right side
    15,578.34x = 182,828,172.27
  5. Step 5: Solve for x
    x = 182,828,172.27/15,578.34
  6. Step 6: Final answer
    x = 11,736.05

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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.