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Finding the Fourth Proportional to 15,896.56, 21,936.47 and 8,726.30

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Solution

The fourth proportional to 15,896.56, 21,936.47 and 8,726.30 is: 12,041.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,896.56 : 21,936.47 = 8,726.30 : x
  2. Step 2: Convert to fraction form
    15,896.56/21,936.47 = 8,726.30/x
  3. Step 3: Cross multiply
    15,896.56x = 21,936.47 × 8,726.30
  4. Step 4: Simplify right side
    15,896.56x = 191,424,218.16
  5. Step 5: Solve for x
    x = 191,424,218.16/15,896.56
  6. Step 6: Final answer
    x = 12,041.86

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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.