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Finding the Fourth Proportional to 21,999.73, 32,999.60 and 7,208.73

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Solution

The fourth proportional to 21,999.73, 32,999.60 and 7,208.73 is: 10,813.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.73 : 32,999.60 = 7,208.73 : x
  2. Step 2: Convert to fraction form
    21,999.73/32,999.60 = 7,208.73/x
  3. Step 3: Cross multiply
    21,999.73x = 32,999.60 × 7,208.73
  4. Step 4: Simplify right side
    21,999.73x = 237,885,206.51
  5. Step 5: Solve for x
    x = 237,885,206.51/21,999.73
  6. Step 6: Final answer
    x = 10,813.10

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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.