Home / 18,721,880.70-28,082,821.05-15,698,571.90

Finding the Fourth Proportional to 18,721,880.70, 28,082,821.05 and 15,698,571.90

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Solution

The fourth proportional to 18,721,880.70, 28,082,821.05 and 15,698,571.90 is: 23,547,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,880.70 : 28,082,821.05 = 15,698,571.90 : x
  2. Step 2: Convert to fraction form
    18,721,880.70/28,082,821.05 = 15,698,571.90/x
  3. Step 3: Cross multiply
    18,721,880.70x = 28,082,821.05 × 15,698,571.90
  4. Step 4: Simplify right side
    18,721,880.70x = 440,860,185,408,258.50
  5. Step 5: Solve for x
    x = 440,860,185,408,258.50/18,721,880.70
  6. Step 6: Final answer
    x = 23,547,857.85

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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.