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Finding the Fourth Proportional to 21,995.89, 32,995.64 and 7,204.48

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Solution

The fourth proportional to 21,995.89, 32,995.64 and 7,204.48 is: 10,807.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.89 : 32,995.64 = 7,204.48 : x
  2. Step 2: Convert to fraction form
    21,995.89/32,995.64 = 7,204.48/x
  3. Step 3: Cross multiply
    21,995.89x = 32,995.64 × 7,204.48
  4. Step 4: Simplify right side
    21,995.89x = 237,716,363.99
  5. Step 5: Solve for x
    x = 237,716,363.99/21,995.89
  6. Step 6: Final answer
    x = 10,807.31

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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.