Home / 15,138,943.88-20,888,623.86-8,699,171.72

Finding the Fourth Proportional to 15,138,943.88, 20,888,623.86 and 8,699,171.72

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Solution

The fourth proportional to 15,138,943.88, 20,888,623.86 and 8,699,171.72 is: 12,003,064.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138,943.88 : 20,888,623.86 = 8,699,171.72 : x
  2. Step 2: Convert to fraction form
    15,138,943.88/20,888,623.86 = 8,699,171.72/x
  3. Step 3: Cross multiply
    15,138,943.88x = 20,888,623.86 × 8,699,171.72
  4. Step 4: Simplify right side
    15,138,943.88x = 181,713,725,952,629.25
  5. Step 5: Solve for x
    x = 181,713,725,952,629.25/15,138,943.88
  6. Step 6: Final answer
    x = 12,003,064.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.