Home / 12,128,417.20-18,192,625.80-5,751,125.20

Finding the Fourth Proportional to 12,128,417.20, 18,192,625.80 and 5,751,125.20

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Solution

The fourth proportional to 12,128,417.20, 18,192,625.80 and 5,751,125.20 is: 8,626,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,417.20 : 18,192,625.80 = 5,751,125.20 : x
  2. Step 2: Convert to fraction form
    12,128,417.20/18,192,625.80 = 5,751,125.20/x
  3. Step 3: Cross multiply
    12,128,417.20x = 18,192,625.80 × 5,751,125.20
  4. Step 4: Simplify right side
    12,128,417.20x = 104,628,068,692,550.17
  5. Step 5: Solve for x
    x = 104,628,068,692,550.17/12,128,417.20
  6. Step 6: Final answer
    x = 8,626,687.80

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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.