Home / 12,944.40-19,420.80-10,629.84

Finding the Fourth Proportional to 12,944.40, 19,420.80 and 10,629.84

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Solution

The fourth proportional to 12,944.40, 19,420.80 and 10,629.84 is: 15,948.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,944.40 : 19,420.80 = 10,629.84 : x
  2. Step 2: Convert to fraction form
    12,944.40/19,420.80 = 10,629.84/x
  3. Step 3: Cross multiply
    12,944.40x = 19,420.80 × 10,629.84
  4. Step 4: Simplify right side
    12,944.40x = 206,439,996.67
  5. Step 5: Solve for x
    x = 206,439,996.67/12,944.40
  6. Step 6: Final answer
    x = 15,948.21

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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.