Home / 12,896.40-19,330.20-7,352.40

Finding the Fourth Proportional to 12,896.40, 19,330.20 and 7,352.40

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Solution

The fourth proportional to 12,896.40, 19,330.20 and 7,352.40 is: 11,020.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,896.40 : 19,330.20 = 7,352.40 : x
  2. Step 2: Convert to fraction form
    12,896.40/19,330.20 = 7,352.40/x
  3. Step 3: Cross multiply
    12,896.40x = 19,330.20 × 7,352.40
  4. Step 4: Simplify right side
    12,896.40x = 142,123,362.48
  5. Step 5: Solve for x
    x = 142,123,362.48/12,896.40
  6. Step 6: Final answer
    x = 11,020.39

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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.