Home / 13,427.36-20,139.60-8,224.16

Finding the Fourth Proportional to 13,427.36, 20,139.60 and 8,224.16

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Solution

The fourth proportional to 13,427.36, 20,139.60 and 8,224.16 is: 12,335.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.36 : 20,139.60 = 8,224.16 : x
  2. Step 2: Convert to fraction form
    13,427.36/20,139.60 = 8,224.16/x
  3. Step 3: Cross multiply
    13,427.36x = 20,139.60 × 8,224.16
  4. Step 4: Simplify right side
    13,427.36x = 165,631,292.74
  5. Step 5: Solve for x
    x = 165,631,292.74/13,427.36
  6. Step 6: Final answer
    x = 12,335.36

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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.