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Finding the Fourth Proportional to 15,653.52, 21,602.16 and 8,579.52

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Solution

The fourth proportional to 15,653.52, 21,602.16 and 8,579.52 is: 11,839.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.52 : 21,602.16 = 8,579.52 : x
  2. Step 2: Convert to fraction form
    15,653.52/21,602.16 = 8,579.52/x
  3. Step 3: Cross multiply
    15,653.52x = 21,602.16 × 8,579.52
  4. Step 4: Simplify right side
    15,653.52x = 185,336,163.76
  5. Step 5: Solve for x
    x = 185,336,163.76/15,653.52
  6. Step 6: Final answer
    x = 11,839.90

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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.