Home / 15,650.72-21,599.36-8,578.51

Finding the Fourth Proportional to 15,650.72, 21,599.36 and 8,578.51

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Solution

The fourth proportional to 15,650.72, 21,599.36 and 8,578.51 is: 11,839.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,650.72 : 21,599.36 = 8,578.51 : x
  2. Step 2: Convert to fraction form
    15,650.72/21,599.36 = 8,578.51/x
  3. Step 3: Cross multiply
    15,650.72x = 21,599.36 × 8,578.51
  4. Step 4: Simplify right side
    15,650.72x = 185,290,261.03
  5. Step 5: Solve for x
    x = 185,290,261.03/15,650.72
  6. Step 6: Final answer
    x = 11,839.09

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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.