Home / 18,947,000.80-28,420,501.20-5,485,189.60

Finding the Fourth Proportional to 18,947,000.80, 28,420,501.20 and 5,485,189.60

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Solution

The fourth proportional to 18,947,000.80, 28,420,501.20 and 5,485,189.60 is: 8,227,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947,000.80 : 28,420,501.20 = 5,485,189.60 : x
  2. Step 2: Convert to fraction form
    18,947,000.80/28,420,501.20 = 5,485,189.60/x
  3. Step 3: Cross multiply
    18,947,000.80x = 28,420,501.20 × 5,485,189.60
  4. Step 4: Simplify right side
    18,947,000.80x = 155,891,837,609,027.50
  5. Step 5: Solve for x
    x = 155,891,837,609,027.50/18,947,000.80
  6. Step 6: Final answer
    x = 8,227,784.40

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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.