Home / 28,517,813.60-42,782,941.20-8,321,410.40

Finding the Fourth Proportional to 28,517,813.60, 42,782,941.20 and 8,321,410.40

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Solution

The fourth proportional to 28,517,813.60, 42,782,941.20 and 8,321,410.40 is: 12,483,930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517,813.60 : 42,782,941.20 = 8,321,410.40 : x
  2. Step 2: Convert to fraction form
    28,517,813.60/42,782,941.20 = 8,321,410.40/x
  3. Step 3: Cross multiply
    28,517,813.60x = 42,782,941.20 × 8,321,410.40
  4. Step 4: Simplify right side
    28,517,813.60x = 356,014,411,844,268.50
  5. Step 5: Solve for x
    x = 356,014,411,844,268.50/28,517,813.60
  6. Step 6: Final answer
    x = 12,483,930.81

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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.