Home / 20,989,060.84-28,972,150.50-12,290,029.48

Finding the Fourth Proportional to 20,989,060.84, 28,972,150.50 and 12,290,029.48

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Solution

The fourth proportional to 20,989,060.84, 28,972,150.50 and 12,290,029.48 is: 16,964,483.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989,060.84 : 28,972,150.50 = 12,290,029.48 : x
  2. Step 2: Convert to fraction form
    20,989,060.84/28,972,150.50 = 12,290,029.48/x
  3. Step 3: Cross multiply
    20,989,060.84x = 28,972,150.50 × 12,290,029.48
  4. Step 4: Simplify right side
    20,989,060.84x = 356,068,583,743,996.75
  5. Step 5: Solve for x
    x = 356,068,583,743,996.75/20,989,060.84
  6. Step 6: Final answer
    x = 16,964,483.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.