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Finding the Fourth Proportional to 15,653.23, 21,601.52 and 8,579.77

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Solution

The fourth proportional to 15,653.23, 21,601.52 and 8,579.77 is: 11,840.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.23 : 21,601.52 = 8,579.77 : x
  2. Step 2: Convert to fraction form
    15,653.23/21,601.52 = 8,579.77/x
  3. Step 3: Cross multiply
    15,653.23x = 21,601.52 × 8,579.77
  4. Step 4: Simplify right side
    15,653.23x = 185,336,040.70
  5. Step 5: Solve for x
    x = 185,336,040.70/15,653.23
  6. Step 6: Final answer
    x = 11,840.12

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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.