Home / 18,689,015.40-28,012,787.10-7,325,687.40

Finding the Fourth Proportional to 18,689,015.40, 28,012,787.10 and 7,325,687.40

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Solution

The fourth proportional to 18,689,015.40, 28,012,787.10 and 7,325,687.40 is: 10,980,403.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689,015.40 : 28,012,787.10 = 7,325,687.40 : x
  2. Step 2: Convert to fraction form
    18,689,015.40/28,012,787.10 = 7,325,687.40/x
  3. Step 3: Cross multiply
    18,689,015.40x = 28,012,787.10 × 7,325,687.40
  4. Step 4: Simplify right side
    18,689,015.40x = 205,212,921,497,352.56
  5. Step 5: Solve for x
    x = 205,212,921,497,352.56/18,689,015.40
  6. Step 6: Final answer
    x = 10,980,403.04

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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.