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Finding the Fourth Proportional to 15,573.56, 21,490.60 and 8,498.56

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Solution

The fourth proportional to 15,573.56, 21,490.60 and 8,498.56 is: 11,727.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,573.56 : 21,490.60 = 8,498.56 : x
  2. Step 2: Convert to fraction form
    15,573.56/21,490.60 = 8,498.56/x
  3. Step 3: Cross multiply
    15,573.56x = 21,490.60 × 8,498.56
  4. Step 4: Simplify right side
    15,573.56x = 182,639,153.54
  5. Step 5: Solve for x
    x = 182,639,153.54/15,573.56
  6. Step 6: Final answer
    x = 11,727.51

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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.