Home / 13,458,327.20-20,187,490.80-7,789,623.20

Finding the Fourth Proportional to 13,458,327.20, 20,187,490.80 and 7,789,623.20

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Solution

The fourth proportional to 13,458,327.20, 20,187,490.80 and 7,789,623.20 is: 11,684,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458,327.20 : 20,187,490.80 = 7,789,623.20 : x
  2. Step 2: Convert to fraction form
    13,458,327.20/20,187,490.80 = 7,789,623.20/x
  3. Step 3: Cross multiply
    13,458,327.20x = 20,187,490.80 × 7,789,623.20
  4. Step 4: Simplify right side
    13,458,327.20x = 157,252,946,685,466.56
  5. Step 5: Solve for x
    x = 157,252,946,685,466.56/13,458,327.20
  6. Step 6: Final answer
    x = 11,684,434.80

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1.5x scale

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.