Home / 28,171,913.20-42,289,362.60-21,810,367.60

Finding the Fourth Proportional to 28,171,913.20, 42,289,362.60 and 21,810,367.60

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Solution

The fourth proportional to 28,171,913.20, 42,289,362.60 and 21,810,367.60 is: 32,739,932.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171,913.20 : 42,289,362.60 = 21,810,367.60 : x
  2. Step 2: Convert to fraction form
    28,171,913.20/42,289,362.60 = 21,810,367.60/x
  3. Step 3: Cross multiply
    28,171,913.20x = 42,289,362.60 × 21,810,367.60
  4. Step 4: Simplify right side
    28,171,913.20x = 922,346,543,875,691.88
  5. Step 5: Solve for x
    x = 922,346,543,875,691.88/28,171,913.20
  6. Step 6: Final answer
    x = 32,739,932.76

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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.