Home / 13,938.71-19,226.68-8,269.45

Finding the Fourth Proportional to 13,938.71, 19,226.68 and 8,269.45

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Solution

The fourth proportional to 13,938.71, 19,226.68 and 8,269.45 is: 11,406.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.71 : 19,226.68 = 8,269.45 : x
  2. Step 2: Convert to fraction form
    13,938.71/19,226.68 = 8,269.45/x
  3. Step 3: Cross multiply
    13,938.71x = 19,226.68 × 8,269.45
  4. Step 4: Simplify right side
    13,938.71x = 158,994,013.88
  5. Step 5: Solve for x
    x = 158,994,013.88/13,938.71
  6. Step 6: Final answer
    x = 11,406.65

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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.