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Finding the Fourth Proportional to 21,699.84, 32,549.41 and 6,908.54

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Solution

The fourth proportional to 21,699.84, 32,549.41 and 6,908.54 is: 10,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,699.84 : 32,549.41 = 6,908.54 : x
  2. Step 2: Convert to fraction form
    21,699.84/32,549.41 = 6,908.54/x
  3. Step 3: Cross multiply
    21,699.84x = 32,549.41 × 6,908.54
  4. Step 4: Simplify right side
    21,699.84x = 224,868,900.96
  5. Step 5: Solve for x
    x = 224,868,900.96/21,699.84
  6. Step 6: Final answer
    x = 10,362.70

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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.