Home / 19,190,951.40-28,739,187.90-12,766,420.20

Finding the Fourth Proportional to 19,190,951.40, 28,739,187.90 and 12,766,420.20

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Solution

The fourth proportional to 19,190,951.40, 28,739,187.90 and 12,766,420.20 is: 19,118,205.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,190,951.40 : 28,739,187.90 = 12,766,420.20 : x
  2. Step 2: Convert to fraction form
    19,190,951.40/28,739,187.90 = 12,766,420.20/x
  3. Step 3: Cross multiply
    19,190,951.40x = 28,739,187.90 × 12,766,420.20
  4. Step 4: Simplify right side
    19,190,951.40x = 366,896,548,938,155.56
  5. Step 5: Solve for x
    x = 366,896,548,938,155.56/19,190,951.40
  6. Step 6: Final answer
    x = 19,118,205.31

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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.