Home / 13,590,137.40-20,408,825.70-7,212,845.40

Finding the Fourth Proportional to 13,590,137.40, 20,408,825.70 and 7,212,845.40

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Solution

The fourth proportional to 13,590,137.40, 20,408,825.70 and 7,212,845.40 is: 10,831,803.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590,137.40 : 20,408,825.70 = 7,212,845.40 : x
  2. Step 2: Convert to fraction form
    13,590,137.40/20,408,825.70 = 7,212,845.40/x
  3. Step 3: Cross multiply
    13,590,137.40x = 20,408,825.70 × 7,212,845.40
  4. Step 4: Simplify right side
    13,590,137.40x = 147,205,704,569,646.78
  5. Step 5: Solve for x
    x = 147,205,704,569,646.78/13,590,137.40
  6. Step 6: Final answer
    x = 10,831,803.99

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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.