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Finding the Fourth Proportional to 18,456, 25,472.16 and 11,008.32

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Solution

The fourth proportional to 18,456, 25,472.16 and 11,008.32 is: 15,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456 : 25,472.16 = 11,008.32 : x
  2. Step 2: Convert to fraction form
    18,456/25,472.16 = 11,008.32/x
  3. Step 3: Cross multiply
    18,456x = 25,472.16 × 11,008.32
  4. Step 4: Simplify right side
    18,456x = 280,405,688.37
  5. Step 5: Solve for x
    x = 280,405,688.37/18,456
  6. Step 6: Final answer
    x = 15,193.20

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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.