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Finding the Fourth Proportional to 21,901.79, 32,849.59 and 7,110.89

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Solution

The fourth proportional to 21,901.79, 32,849.59 and 7,110.89 is: 10,665.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.79 : 32,849.59 = 7,110.89 : x
  2. Step 2: Convert to fraction form
    21,901.79/32,849.59 = 7,110.89/x
  3. Step 3: Cross multiply
    21,901.79x = 32,849.59 × 7,110.89
  4. Step 4: Simplify right side
    21,901.79x = 233,589,656.79
  5. Step 5: Solve for x
    x = 233,589,656.79/21,901.79
  6. Step 6: Final answer
    x = 10,665.33

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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.