Home / 13,980.33-20,955.78-7,040.25

Finding the Fourth Proportional to 13,980.33, 20,955.78 and 7,040.25

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Solution

The fourth proportional to 13,980.33, 20,955.78 and 7,040.25 is: 10,552.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.33 : 20,955.78 = 7,040.25 : x
  2. Step 2: Convert to fraction form
    13,980.33/20,955.78 = 7,040.25/x
  3. Step 3: Cross multiply
    13,980.33x = 20,955.78 × 7,040.25
  4. Step 4: Simplify right side
    13,980.33x = 147,533,930.15
  5. Step 5: Solve for x
    x = 147,533,930.15/13,980.33
  6. Step 6: Final answer
    x = 10,552.96

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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.