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Finding the Fourth Proportional to 15,908.16, 21,953.93 and 8,834.54

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Solution

The fourth proportional to 15,908.16, 21,953.93 and 8,834.54 is: 12,192.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,908.16 : 21,953.93 = 8,834.54 : x
  2. Step 2: Convert to fraction form
    15,908.16/21,953.93 = 8,834.54/x
  3. Step 3: Cross multiply
    15,908.16x = 21,953.93 × 8,834.54
  4. Step 4: Simplify right side
    15,908.16x = 193,952,718.80
  5. Step 5: Solve for x
    x = 193,952,718.80/15,908.16
  6. Step 6: Final answer
    x = 12,192.03

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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.