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Finding the Fourth Proportional to 12,574.64, 18,858.02 and 4,253.11

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Solution

The fourth proportional to 12,574.64, 18,858.02 and 4,253.11 is: 6,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574.64 : 18,858.02 = 4,253.11 : x
  2. Step 2: Convert to fraction form
    12,574.64/18,858.02 = 4,253.11/x
  3. Step 3: Cross multiply
    12,574.64x = 18,858.02 × 4,253.11
  4. Step 4: Simplify right side
    12,574.64x = 80,205,165.03
  5. Step 5: Solve for x
    x = 80,205,165.03/12,574.64
  6. Step 6: Final answer
    x = 6,378.33

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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.