Home / 28,025,193.60-42,037,790.40-12,879,125.10

Finding the Fourth Proportional to 28,025,193.60, 42,037,790.40 and 12,879,125.10

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Solution

The fourth proportional to 28,025,193.60, 42,037,790.40 and 12,879,125.10 is: 19,318,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,025,193.60 : 42,037,790.40 = 12,879,125.10 : x
  2. Step 2: Convert to fraction form
    28,025,193.60/42,037,790.40 = 12,879,125.10/x
  3. Step 3: Cross multiply
    28,025,193.60x = 42,037,790.40 × 12,879,125.10
  4. Step 4: Simplify right side
    28,025,193.60x = 541,409,961,489,179
  5. Step 5: Solve for x
    x = 541,409,961,489,179/28,025,193.60
  6. Step 6: Final answer
    x = 19,318,687.65

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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.