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Finding the Fourth Proportional to 21,863.84, 32,800.62 and 6,280.28

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Solution

The fourth proportional to 21,863.84, 32,800.62 and 6,280.28 is: 9,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.84 : 32,800.62 = 6,280.28 : x
  2. Step 2: Convert to fraction form
    21,863.84/32,800.62 = 6,280.28/x
  3. Step 3: Cross multiply
    21,863.84x = 32,800.62 × 6,280.28
  4. Step 4: Simplify right side
    21,863.84x = 205,997,077.77
  5. Step 5: Solve for x
    x = 205,997,077.77/21,863.84
  6. Step 6: Final answer
    x = 9,421.82

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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.