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Finding the Fourth Proportional to 15,908.50, 21,953.12 and 8,835.37

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Solution

The fourth proportional to 15,908.50, 21,953.12 and 8,835.37 is: 12,192.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,908.50 : 21,953.12 = 8,835.37 : x
  2. Step 2: Convert to fraction form
    15,908.50/21,953.12 = 8,835.37/x
  3. Step 3: Cross multiply
    15,908.50x = 21,953.12 × 8,835.37
  4. Step 4: Simplify right side
    15,908.50x = 193,963,937.85
  5. Step 5: Solve for x
    x = 193,963,937.85/15,908.50
  6. Step 6: Final answer
    x = 12,192.48

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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.