Home / 11,271.12-15,556.12-9,380.16

Finding the Fourth Proportional to 11,271.12, 15,556.12 and 9,380.16

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Solution

The fourth proportional to 11,271.12, 15,556.12 and 9,380.16 is: 12,946.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.12 : 15,556.12 = 9,380.16 : x
  2. Step 2: Convert to fraction form
    11,271.12/15,556.12 = 9,380.16/x
  3. Step 3: Cross multiply
    11,271.12x = 15,556.12 × 9,380.16
  4. Step 4: Simplify right side
    11,271.12x = 145,918,894.58
  5. Step 5: Solve for x
    x = 145,918,894.58/11,271.12
  6. Step 6: Final answer
    x = 12,946.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.