Home / 15,138,959.88-20,888,645.94-8,699,187.72

Finding the Fourth Proportional to 15,138,959.88, 20,888,645.94 and 8,699,187.72

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Solution

The fourth proportional to 15,138,959.88, 20,888,645.94 and 8,699,187.72 is: 12,003,086.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138,959.88 : 20,888,645.94 = 8,699,187.72 : x
  2. Step 2: Convert to fraction form
    15,138,959.88/20,888,645.94 = 8,699,187.72/x
  3. Step 3: Cross multiply
    15,138,959.88x = 20,888,645.94 × 8,699,187.72
  4. Step 4: Simplify right side
    15,138,959.88x = 181,714,252,248,675.88
  5. Step 5: Solve for x
    x = 181,714,252,248,675.88/15,138,959.88
  6. Step 6: Final answer
    x = 12,003,086.98

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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.