Home / 12,911.60-19,367.40-8,537.60

Finding the Fourth Proportional to 12,911.60, 19,367.40 and 8,537.60

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Solution

The fourth proportional to 12,911.60, 19,367.40 and 8,537.60 is: 12,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.60 : 19,367.40 = 8,537.60 : x
  2. Step 2: Convert to fraction form
    12,911.60/19,367.40 = 8,537.60/x
  3. Step 3: Cross multiply
    12,911.60x = 19,367.40 × 8,537.60
  4. Step 4: Simplify right side
    12,911.60x = 165,351,114.24
  5. Step 5: Solve for x
    x = 165,351,114.24/12,911.60
  6. Step 6: Final answer
    x = 12,806.40

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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.