Home / 9,428.75-13,011.68-5,179.94

Finding the Fourth Proportional to 9,428.75, 13,011.68 and 5,179.94

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Solution

The fourth proportional to 9,428.75, 13,011.68 and 5,179.94 is: 7,148.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,428.75 : 13,011.68 = 5,179.94 : x
  2. Step 2: Convert to fraction form
    9,428.75/13,011.68 = 5,179.94/x
  3. Step 3: Cross multiply
    9,428.75x = 13,011.68 × 5,179.94
  4. Step 4: Simplify right side
    9,428.75x = 67,399,630.74
  5. Step 5: Solve for x
    x = 67,399,630.74/9,428.75
  6. Step 6: Final answer
    x = 7,148.31

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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.