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Finding the Fourth Proportional to 12,615.68, 18,923.52 and 4,826.88

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Solution

The fourth proportional to 12,615.68, 18,923.52 and 4,826.88 is: 7,240.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.68 : 18,923.52 = 4,826.88 : x
  2. Step 2: Convert to fraction form
    12,615.68/18,923.52 = 4,826.88/x
  3. Step 3: Cross multiply
    12,615.68x = 18,923.52 × 4,826.88
  4. Step 4: Simplify right side
    12,615.68x = 91,341,560.22
  5. Step 5: Solve for x
    x = 91,341,560.22/12,615.68
  6. Step 6: Final answer
    x = 7,240.32

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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.