Home / 13,123,990.80-19,685,986.20-8,589,027.60

Finding the Fourth Proportional to 13,123,990.80, 19,685,986.20 and 8,589,027.60

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Solution

The fourth proportional to 13,123,990.80, 19,685,986.20 and 8,589,027.60 is: 12,883,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123,990.80 : 19,685,986.20 = 8,589,027.60 : x
  2. Step 2: Convert to fraction form
    13,123,990.80/19,685,986.20 = 8,589,027.60/x
  3. Step 3: Cross multiply
    13,123,990.80x = 19,685,986.20 × 8,589,027.60
  4. Step 4: Simplify right side
    13,123,990.80x = 169,083,478,805,019.09
  5. Step 5: Solve for x
    x = 169,083,478,805,019.09/13,123,990.80
  6. Step 6: Final answer
    x = 12,883,541.40

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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.