Home / 15,220.36-21,004.04-8,505.98

Finding the Fourth Proportional to 15,220.36, 21,004.04 and 8,505.98

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Solution

The fourth proportional to 15,220.36, 21,004.04 and 8,505.98 is: 11,738.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.36 : 21,004.04 = 8,505.98 : x
  2. Step 2: Convert to fraction form
    15,220.36/21,004.04 = 8,505.98/x
  3. Step 3: Cross multiply
    15,220.36x = 21,004.04 × 8,505.98
  4. Step 4: Simplify right side
    15,220.36x = 178,659,939.17
  5. Step 5: Solve for x
    x = 178,659,939.17/15,220.36
  6. Step 6: Final answer
    x = 11,738.22

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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.