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Finding the Fourth Proportional to 21,670.78, 32,511.04 and 6,880.18

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Solution

The fourth proportional to 21,670.78, 32,511.04 and 6,880.18 is: 10,321.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.78 : 32,511.04 = 6,880.18 : x
  2. Step 2: Convert to fraction form
    21,670.78/32,511.04 = 6,880.18/x
  3. Step 3: Cross multiply
    21,670.78x = 32,511.04 × 6,880.18
  4. Step 4: Simplify right side
    21,670.78x = 223,681,807.19
  5. Step 5: Solve for x
    x = 223,681,807.19/21,670.78
  6. Step 6: Final answer
    x = 10,321.82

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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.