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Finding the Fourth Proportional to 21,406.70, 32,102.09 and 7,362.79

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Solution

The fourth proportional to 21,406.70, 32,102.09 and 7,362.79 is: 11,041.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.70 : 32,102.09 = 7,362.79 : x
  2. Step 2: Convert to fraction form
    21,406.70/32,102.09 = 7,362.79/x
  3. Step 3: Cross multiply
    21,406.70x = 32,102.09 × 7,362.79
  4. Step 4: Simplify right side
    21,406.70x = 236,360,857.77
  5. Step 5: Solve for x
    x = 236,360,857.77/21,406.70
  6. Step 6: Final answer
    x = 11,041.44

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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.