Home / 12,128,412.70-18,192,619.05-5,751,120.70

Finding the Fourth Proportional to 12,128,412.70, 18,192,619.05 and 5,751,120.70

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Solution

The fourth proportional to 12,128,412.70, 18,192,619.05 and 5,751,120.70 is: 8,626,681.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,412.70 : 18,192,619.05 = 5,751,120.70 : x
  2. Step 2: Convert to fraction form
    12,128,412.70/18,192,619.05 = 5,751,120.70/x
  3. Step 3: Cross multiply
    12,128,412.70x = 18,192,619.05 × 5,751,120.70
  4. Step 4: Simplify right side
    12,128,412.70x = 104,627,948,005,669.34
  5. Step 5: Solve for x
    x = 104,627,948,005,669.34/12,128,412.70
  6. Step 6: Final answer
    x = 8,626,681.05

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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.