Home / 13,995.56-20,996.67-7,420.28

Finding the Fourth Proportional to 13,995.56, 20,996.67 and 7,420.28

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Solution

The fourth proportional to 13,995.56, 20,996.67 and 7,420.28 is: 11,132.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.56 : 20,996.67 = 7,420.28 : x
  2. Step 2: Convert to fraction form
    13,995.56/20,996.67 = 7,420.28/x
  3. Step 3: Cross multiply
    13,995.56x = 20,996.67 × 7,420.28
  4. Step 4: Simplify right side
    13,995.56x = 155,801,065.48
  5. Step 5: Solve for x
    x = 155,801,065.48/13,995.56
  6. Step 6: Final answer
    x = 11,132.18

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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.