Home / 14,059.12-19,399.92-7,770.40

Finding the Fourth Proportional to 14,059.12, 19,399.92 and 7,770.40

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Solution

The fourth proportional to 14,059.12, 19,399.92 and 7,770.40 is: 10,722.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,059.12 : 19,399.92 = 7,770.40 : x
  2. Step 2: Convert to fraction form
    14,059.12/19,399.92 = 7,770.40/x
  3. Step 3: Cross multiply
    14,059.12x = 19,399.92 × 7,770.40
  4. Step 4: Simplify right side
    14,059.12x = 150,745,138.37
  5. Step 5: Solve for x
    x = 150,745,138.37/14,059.12
  6. Step 6: Final answer
    x = 10,722.23

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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.