Home / 20,123.70-30,189.60-6,973.35

Finding the Fourth Proportional to 20,123.70, 30,189.60 and 6,973.35

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Solution

The fourth proportional to 20,123.70, 30,189.60 and 6,973.35 is: 10,461.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.70 : 30,189.60 = 6,973.35 : x
  2. Step 2: Convert to fraction form
    20,123.70/30,189.60 = 6,973.35/x
  3. Step 3: Cross multiply
    20,123.70x = 30,189.60 × 6,973.35
  4. Step 4: Simplify right side
    20,123.70x = 210,522,647.16
  5. Step 5: Solve for x
    x = 210,522,647.16/20,123.70
  6. Step 6: Final answer
    x = 10,461.43

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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.