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Finding the Fourth Proportional to 14,662.59, 21,989.64 and 7,161.51

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Solution

The fourth proportional to 14,662.59, 21,989.64 and 7,161.51 is: 10,740.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,662.59 : 21,989.64 = 7,161.51 : x
  2. Step 2: Convert to fraction form
    14,662.59/21,989.64 = 7,161.51/x
  3. Step 3: Cross multiply
    14,662.59x = 21,989.64 × 7,161.51
  4. Step 4: Simplify right side
    14,662.59x = 157,479,026.76
  5. Step 5: Solve for x
    x = 157,479,026.76/14,662.59
  6. Step 6: Final answer
    x = 10,740.19

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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.