Home / 13,431.08-20,146.59-3,570.36

Finding the Fourth Proportional to 13,431.08, 20,146.59 and 3,570.36

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Solution

The fourth proportional to 13,431.08, 20,146.59 and 3,570.36 is: 5,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.08 : 20,146.59 = 3,570.36 : x
  2. Step 2: Convert to fraction form
    13,431.08/20,146.59 = 3,570.36/x
  3. Step 3: Cross multiply
    13,431.08x = 20,146.59 × 3,570.36
  4. Step 4: Simplify right side
    13,431.08x = 71,930,478.34
  5. Step 5: Solve for x
    x = 71,930,478.34/13,431.08
  6. Step 6: Final answer
    x = 5,355.53

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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.