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Finding the Fourth Proportional to 10,889.44, 16,334.16 and 8,712.01

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Solution

The fourth proportional to 10,889.44, 16,334.16 and 8,712.01 is: 13,068.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.44 : 16,334.16 = 8,712.01 : x
  2. Step 2: Convert to fraction form
    10,889.44/16,334.16 = 8,712.01/x
  3. Step 3: Cross multiply
    10,889.44x = 16,334.16 × 8,712.01
  4. Step 4: Simplify right side
    10,889.44x = 142,303,365.26
  5. Step 5: Solve for x
    x = 142,303,365.26/10,889.44
  6. Step 6: Final answer
    x = 13,068.02

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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.