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Finding the Fourth Proportional to 15,898.56, 23,803.92 and 11,991.12

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Solution

The fourth proportional to 15,898.56, 23,803.92 and 11,991.12 is: 17,953.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,898.56 : 23,803.92 = 11,991.12 : x
  2. Step 2: Convert to fraction form
    15,898.56/23,803.92 = 11,991.12/x
  3. Step 3: Cross multiply
    15,898.56x = 23,803.92 × 11,991.12
  4. Step 4: Simplify right side
    15,898.56x = 285,435,661.19
  5. Step 5: Solve for x
    x = 285,435,661.19/15,898.56
  6. Step 6: Final answer
    x = 17,953.55

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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.