Home / 20,438,205.20-30,631,258.20-10,858,173.20

Finding the Fourth Proportional to 20,438,205.20, 30,631,258.20 and 10,858,173.20

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Solution

The fourth proportional to 20,438,205.20, 30,631,258.20 and 10,858,173.20 is: 16,273,420.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438,205.20 : 30,631,258.20 = 10,858,173.20 : x
  2. Step 2: Convert to fraction form
    20,438,205.20/30,631,258.20 = 10,858,173.20/x
  3. Step 3: Cross multiply
    20,438,205.20x = 30,631,258.20 × 10,858,173.20
  4. Step 4: Simplify right side
    20,438,205.20x = 332,599,506,869,520.19
  5. Step 5: Solve for x
    x = 332,599,506,869,520.19/20,438,205.20
  6. Step 6: Final answer
    x = 16,273,420.47

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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.