Home / 13,455.60-20,161.80-11,252.40

Finding the Fourth Proportional to 13,455.60, 20,161.80 and 11,252.40

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Solution

The fourth proportional to 13,455.60, 20,161.80 and 11,252.40 is: 16,860.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.60 : 20,161.80 = 11,252.40 : x
  2. Step 2: Convert to fraction form
    13,455.60/20,161.80 = 11,252.40/x
  3. Step 3: Cross multiply
    13,455.60x = 20,161.80 × 11,252.40
  4. Step 4: Simplify right side
    13,455.60x = 226,868,638.32
  5. Step 5: Solve for x
    x = 226,868,638.32/13,455.60
  6. Step 6: Final answer
    x = 16,860.54

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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.