Home / 20,860,000.60-31,290,000.90-5,713,907.80

Finding the Fourth Proportional to 20,860,000.60, 31,290,000.90 and 5,713,907.80

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Solution

The fourth proportional to 20,860,000.60, 31,290,000.90 and 5,713,907.80 is: 8,570,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860,000.60 : 31,290,000.90 = 5,713,907.80 : x
  2. Step 2: Convert to fraction form
    20,860,000.60/31,290,000.90 = 5,713,907.80/x
  3. Step 3: Cross multiply
    20,860,000.60x = 31,290,000.90 × 5,713,907.80
  4. Step 4: Simplify right side
    20,860,000.60x = 178,788,180,204,517
  5. Step 5: Solve for x
    x = 178,788,180,204,517/20,860,000.60
  6. Step 6: Final answer
    x = 8,570,861.70

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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.