Home / 14,059.20-19,438.80-12,309.60

Finding the Fourth Proportional to 14,059.20, 19,438.80 and 12,309.60

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Solution

The fourth proportional to 14,059.20, 19,438.80 and 12,309.60 is: 17,019.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,059.20 : 19,438.80 = 12,309.60 : x
  2. Step 2: Convert to fraction form
    14,059.20/19,438.80 = 12,309.60/x
  3. Step 3: Cross multiply
    14,059.20x = 19,438.80 × 12,309.60
  4. Step 4: Simplify right side
    14,059.20x = 239,283,852.48
  5. Step 5: Solve for x
    x = 239,283,852.48/14,059.20
  6. Step 6: Final answer
    x = 17,019.73

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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.