Home / 10,628.56-15,940.09-4,390.35

Finding the Fourth Proportional to 10,628.56, 15,940.09 and 4,390.35

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Solution

The fourth proportional to 10,628.56, 15,940.09 and 4,390.35 is: 6,584.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,628.56 : 15,940.09 = 4,390.35 : x
  2. Step 2: Convert to fraction form
    10,628.56/15,940.09 = 4,390.35/x
  3. Step 3: Cross multiply
    10,628.56x = 15,940.09 × 4,390.35
  4. Step 4: Simplify right side
    10,628.56x = 69,982,574.13
  5. Step 5: Solve for x
    x = 69,982,574.13/10,628.56
  6. Step 6: Final answer
    x = 6,584.39

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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.