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Finding the Fourth Proportional to 28,014.66, 42,022.80 and 8,294.40

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Solution

The fourth proportional to 28,014.66, 42,022.80 and 8,294.40 is: 12,441.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014.66 : 42,022.80 = 8,294.40 : x
  2. Step 2: Convert to fraction form
    28,014.66/42,022.80 = 8,294.40/x
  3. Step 3: Cross multiply
    28,014.66x = 42,022.80 × 8,294.40
  4. Step 4: Simplify right side
    28,014.66x = 348,553,912.32
  5. Step 5: Solve for x
    x = 348,553,912.32/28,014.66
  6. Step 6: Final answer
    x = 12,441.84

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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.