Home / 15,653.02-21,601.20-8,579.90

Finding the Fourth Proportional to 15,653.02, 21,601.20 and 8,579.90

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Solution

The fourth proportional to 15,653.02, 21,601.20 and 8,579.90 is: 11,840.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.02 : 21,601.20 = 8,579.90 : x
  2. Step 2: Convert to fraction form
    15,653.02/21,601.20 = 8,579.90/x
  3. Step 3: Cross multiply
    15,653.02x = 21,601.20 × 8,579.90
  4. Step 4: Simplify right side
    15,653.02x = 185,336,135.88
  5. Step 5: Solve for x
    x = 185,336,135.88/15,653.02
  6. Step 6: Final answer
    x = 11,840.28

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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.