Home / 20,241,830.40-30,362,745.60-18,289,276.80

Finding the Fourth Proportional to 20,241,830.40, 30,362,745.60 and 18,289,276.80

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Solution

The fourth proportional to 20,241,830.40, 30,362,745.60 and 18,289,276.80 is: 27,433,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,241,830.40 : 30,362,745.60 = 18,289,276.80 : x
  2. Step 2: Convert to fraction form
    20,241,830.40/30,362,745.60 = 18,289,276.80/x
  3. Step 3: Cross multiply
    20,241,830.40x = 30,362,745.60 × 18,289,276.80
  4. Step 4: Simplify right side
    20,241,830.40x = 555,312,658,686,382.12
  5. Step 5: Solve for x
    x = 555,312,658,686,382.12/20,241,830.40
  6. Step 6: Final answer
    x = 27,433,915.20

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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.