Home / 20,975.28-28,946.46-11,544.42

Finding the Fourth Proportional to 20,975.28, 28,946.46 and 11,544.42

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Solution

The fourth proportional to 20,975.28, 28,946.46 and 11,544.42 is: 15,931.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.28 : 28,946.46 = 11,544.42 : x
  2. Step 2: Convert to fraction form
    20,975.28/28,946.46 = 11,544.42/x
  3. Step 3: Cross multiply
    20,975.28x = 28,946.46 × 11,544.42
  4. Step 4: Simplify right side
    20,975.28x = 334,170,091.75
  5. Step 5: Solve for x
    x = 334,170,091.75/20,975.28
  6. Step 6: Final answer
    x = 15,931.62

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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.