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Finding the Fourth Proportional to 15,235.68, 21,024.96 and 8,611.68

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Solution

The fourth proportional to 15,235.68, 21,024.96 and 8,611.68 is: 11,883.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,235.68 : 21,024.96 = 8,611.68 : x
  2. Step 2: Convert to fraction form
    15,235.68/21,024.96 = 8,611.68/x
  3. Step 3: Cross multiply
    15,235.68x = 21,024.96 × 8,611.68
  4. Step 4: Simplify right side
    15,235.68x = 181,060,227.53
  5. Step 5: Solve for x
    x = 181,060,227.53/15,235.68
  6. Step 6: Final answer
    x = 11,883.96

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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.