Home / 12,478,619.10-18,724,149.45-7,091,406.30

Finding the Fourth Proportional to 12,478,619.10, 18,724,149.45 and 7,091,406.30

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Solution

The fourth proportional to 12,478,619.10, 18,724,149.45 and 7,091,406.30 is: 10,640,644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,619.10 : 18,724,149.45 = 7,091,406.30 : x
  2. Step 2: Convert to fraction form
    12,478,619.10/18,724,149.45 = 7,091,406.30/x
  3. Step 3: Cross multiply
    12,478,619.10x = 18,724,149.45 × 7,091,406.30
  4. Step 4: Simplify right side
    12,478,619.10x = 132,780,551,371,871.53
  5. Step 5: Solve for x
    x = 132,780,551,371,871.53/12,478,619.10
  6. Step 6: Final answer
    x = 10,640,644.63

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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.