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Finding the Fourth Proportional to 12,271.51, 18,394.12 and 4,865.71

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Solution

The fourth proportional to 12,271.51, 18,394.12 and 4,865.71 is: 7,293.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,271.51 : 18,394.12 = 4,865.71 : x
  2. Step 2: Convert to fraction form
    12,271.51/18,394.12 = 4,865.71/x
  3. Step 3: Cross multiply
    12,271.51x = 18,394.12 × 4,865.71
  4. Step 4: Simplify right side
    12,271.51x = 89,500,453.63
  5. Step 5: Solve for x
    x = 89,500,453.63/12,271.51
  6. Step 6: Final answer
    x = 7,293.35

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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.