Home / 12,769.40-19,154.25-3,886.18

Finding the Fourth Proportional to 12,769.40, 19,154.25 and 3,886.18

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Solution

The fourth proportional to 12,769.40, 19,154.25 and 3,886.18 is: 5,829.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,769.40 : 19,154.25 = 3,886.18 : x
  2. Step 2: Convert to fraction form
    12,769.40/19,154.25 = 3,886.18/x
  3. Step 3: Cross multiply
    12,769.40x = 19,154.25 × 3,886.18
  4. Step 4: Simplify right side
    12,769.40x = 74,436,804.45
  5. Step 5: Solve for x
    x = 74,436,804.45/12,769.40
  6. Step 6: Final answer
    x = 5,829.31

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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.