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Finding the Fourth Proportional to 15,806.43, 23,722.29 and 7,908.63

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Solution

The fourth proportional to 15,806.43, 23,722.29 and 7,908.63 is: 11,869.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,806.43 : 23,722.29 = 7,908.63 : x
  2. Step 2: Convert to fraction form
    15,806.43/23,722.29 = 7,908.63/x
  3. Step 3: Cross multiply
    15,806.43x = 23,722.29 × 7,908.63
  4. Step 4: Simplify right side
    15,806.43x = 187,610,814.36
  5. Step 5: Solve for x
    x = 187,610,814.36/15,806.43
  6. Step 6: Final answer
    x = 11,869.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.