Home / 12,540.32-18,798.78-4,638.44

Finding the Fourth Proportional to 12,540.32, 18,798.78 and 4,638.44

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Solution

The fourth proportional to 12,540.32, 18,798.78 and 4,638.44 is: 6,953.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.32 : 18,798.78 = 4,638.44 : x
  2. Step 2: Convert to fraction form
    12,540.32/18,798.78 = 4,638.44/x
  3. Step 3: Cross multiply
    12,540.32x = 18,798.78 × 4,638.44
  4. Step 4: Simplify right side
    12,540.32x = 87,197,013.10
  5. Step 5: Solve for x
    x = 87,197,013.10/12,540.32
  6. Step 6: Final answer
    x = 6,953.33

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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.