Home / 20,283.62-30,423.40-7,137.01

Finding the Fourth Proportional to 20,283.62, 30,423.40 and 7,137.01

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Solution

The fourth proportional to 20,283.62, 30,423.40 and 7,137.01 is: 10,704.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.62 : 30,423.40 = 7,137.01 : x
  2. Step 2: Convert to fraction form
    20,283.62/30,423.40 = 7,137.01/x
  3. Step 3: Cross multiply
    20,283.62x = 30,423.40 × 7,137.01
  4. Step 4: Simplify right side
    20,283.62x = 217,132,130.22
  5. Step 5: Solve for x
    x = 217,132,130.22/20,283.62
  6. Step 6: Final answer
    x = 10,704.80

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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.