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Finding the Fourth Proportional to 21,777.84, 32,671.08 and 6,982.92

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Solution

The fourth proportional to 21,777.84, 32,671.08 and 6,982.92 is: 10,475.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.84 : 32,671.08 = 6,982.92 : x
  2. Step 2: Convert to fraction form
    21,777.84/32,671.08 = 6,982.92/x
  3. Step 3: Cross multiply
    21,777.84x = 32,671.08 × 6,982.92
  4. Step 4: Simplify right side
    21,777.84x = 228,139,537.95
  5. Step 5: Solve for x
    x = 228,139,537.95/21,777.84
  6. Step 6: Final answer
    x = 10,475.77

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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.