Home / 12,886.20-19,329.30-7,356.60

Finding the Fourth Proportional to 12,886.20, 19,329.30 and 7,356.60

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Solution

The fourth proportional to 12,886.20, 19,329.30 and 7,356.60 is: 11,034.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.20 : 19,329.30 = 7,356.60 : x
  2. Step 2: Convert to fraction form
    12,886.20/19,329.30 = 7,356.60/x
  3. Step 3: Cross multiply
    12,886.20x = 19,329.30 × 7,356.60
  4. Step 4: Simplify right side
    12,886.20x = 142,197,928.38
  5. Step 5: Solve for x
    x = 142,197,928.38/12,886.20
  6. Step 6: Final answer
    x = 11,034.90

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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.