Home / 20,123.42-30,190.51-6,975.79

Finding the Fourth Proportional to 20,123.42, 30,190.51 and 6,975.79

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Solution

The fourth proportional to 20,123.42, 30,190.51 and 6,975.79 is: 10,465.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.42 : 30,190.51 = 6,975.79 : x
  2. Step 2: Convert to fraction form
    20,123.42/30,190.51 = 6,975.79/x
  3. Step 3: Cross multiply
    20,123.42x = 30,190.51 × 6,975.79
  4. Step 4: Simplify right side
    20,123.42x = 210,602,551.76
  5. Step 5: Solve for x
    x = 210,602,551.76/20,123.42
  6. Step 6: Final answer
    x = 10,465.54

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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.