Home / 15,197.35-20,975.84-8,911.75

Finding the Fourth Proportional to 15,197.35, 20,975.84 and 8,911.75

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Solution

The fourth proportional to 15,197.35, 20,975.84 and 8,911.75 is: 12,300.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,197.35 : 20,975.84 = 8,911.75 : x
  2. Step 2: Convert to fraction form
    15,197.35/20,975.84 = 8,911.75/x
  3. Step 3: Cross multiply
    15,197.35x = 20,975.84 × 8,911.75
  4. Step 4: Simplify right side
    15,197.35x = 186,931,378.54
  5. Step 5: Solve for x
    x = 186,931,378.54/15,197.35
  6. Step 6: Final answer
    x = 12,300.26

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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.