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Finding the Fourth Proportional to 14,009.72, 19,333.41 and 7,722.20

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Solution

The fourth proportional to 14,009.72, 19,333.41 and 7,722.20 is: 10,656.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.72 : 19,333.41 = 7,722.20 : x
  2. Step 2: Convert to fraction form
    14,009.72/19,333.41 = 7,722.20/x
  3. Step 3: Cross multiply
    14,009.72x = 19,333.41 × 7,722.20
  4. Step 4: Simplify right side
    14,009.72x = 149,296,458.70
  5. Step 5: Solve for x
    x = 149,296,458.70/14,009.72
  6. Step 6: Final answer
    x = 10,656.63

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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.