Home / 20,082.60-30,005.10-19,393.56

Finding the Fourth Proportional to 20,082.60, 30,005.10 and 19,393.56

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Solution

The fourth proportional to 20,082.60, 30,005.10 and 19,393.56 is: 28,975.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.60 : 30,005.10 = 19,393.56 : x
  2. Step 2: Convert to fraction form
    20,082.60/30,005.10 = 19,393.56/x
  3. Step 3: Cross multiply
    20,082.60x = 30,005.10 × 19,393.56
  4. Step 4: Simplify right side
    20,082.60x = 581,905,707.16
  5. Step 5: Solve for x
    x = 581,905,707.16/20,082.60
  6. Step 6: Final answer
    x = 28,975.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.