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Finding the Fourth Proportional to 21,901.59, 32,859.68 and 7,110.99

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Solution

The fourth proportional to 21,901.59, 32,859.68 and 7,110.99 is: 10,668.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.59 : 32,859.68 = 7,110.99 : x
  2. Step 2: Convert to fraction form
    21,901.59/32,859.68 = 7,110.99/x
  3. Step 3: Cross multiply
    21,901.59x = 32,859.68 × 7,110.99
  4. Step 4: Simplify right side
    21,901.59x = 233,664,820.33
  5. Step 5: Solve for x
    x = 233,664,820.33/21,901.59
  6. Step 6: Final answer
    x = 10,668.85

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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.