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Finding the Fourth Proportional to 14,226.78, 19,636.48 and 8,642.46

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Solution

The fourth proportional to 14,226.78, 19,636.48 and 8,642.46 is: 11,928.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,226.78 : 19,636.48 = 8,642.46 : x
  2. Step 2: Convert to fraction form
    14,226.78/19,636.48 = 8,642.46/x
  3. Step 3: Cross multiply
    14,226.78x = 19,636.48 × 8,642.46
  4. Step 4: Simplify right side
    14,226.78x = 169,707,492.94
  5. Step 5: Solve for x
    x = 169,707,492.94/14,226.78
  6. Step 6: Final answer
    x = 11,928.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.