Home / 28,542,500.40-42,819,280.20-12,368,420.40

Finding the Fourth Proportional to 28,542,500.40, 42,819,280.20 and 12,368,420.40

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Solution

The fourth proportional to 28,542,500.40, 42,819,280.20 and 12,368,420.40 is: 18,555,026.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,542,500.40 : 42,819,280.20 = 12,368,420.40 : x
  2. Step 2: Convert to fraction form
    28,542,500.40/42,819,280.20 = 12,368,420.40/x
  3. Step 3: Cross multiply
    28,542,500.40x = 42,819,280.20 × 12,368,420.40
  4. Step 4: Simplify right side
    28,542,500.40x = 529,606,858,738,996.12
  5. Step 5: Solve for x
    x = 529,606,858,738,996.12/28,542,500.40
  6. Step 6: Final answer
    x = 18,555,026.76

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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.