Home / 13,661.78-20,495.81-4,301.55

Finding the Fourth Proportional to 13,661.78, 20,495.81 and 4,301.55

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Solution

The fourth proportional to 13,661.78, 20,495.81 and 4,301.55 is: 6,453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.78 : 20,495.81 = 4,301.55 : x
  2. Step 2: Convert to fraction form
    13,661.78/20,495.81 = 4,301.55/x
  3. Step 3: Cross multiply
    13,661.78x = 20,495.81 × 4,301.55
  4. Step 4: Simplify right side
    13,661.78x = 88,163,762.26
  5. Step 5: Solve for x
    x = 88,163,762.26/13,661.78
  6. Step 6: Final answer
    x = 6,453.32

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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.