Home / 30,220.09-41,666.22-20,126.40

Finding the Fourth Proportional to 30,220.09, 41,666.22 and 20,126.40

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Solution

The fourth proportional to 30,220.09, 41,666.22 and 20,126.40 is: 27,749.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.09 : 41,666.22 = 20,126.40 : x
  2. Step 2: Convert to fraction form
    30,220.09/41,666.22 = 20,126.40/x
  3. Step 3: Cross multiply
    30,220.09x = 41,666.22 × 20,126.40
  4. Step 4: Simplify right side
    30,220.09x = 838,591,027.75
  5. Step 5: Solve for x
    x = 838,591,027.75/30,220.09
  6. Step 6: Final answer
    x = 27,749.46

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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.