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Finding the Fourth Proportional to 15,908.66, 21,947.52 and 9,192.98

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Solution

The fourth proportional to 15,908.66, 21,947.52 and 9,192.98 is: 12,682.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,908.66 : 21,947.52 = 9,192.98 : x
  2. Step 2: Convert to fraction form
    15,908.66/21,947.52 = 9,192.98/x
  3. Step 3: Cross multiply
    15,908.66x = 21,947.52 × 9,192.98
  4. Step 4: Simplify right side
    15,908.66x = 201,763,112.41
  5. Step 5: Solve for x
    x = 201,763,112.41/15,908.66
  6. Step 6: Final answer
    x = 12,682.60

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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.