Home / 15,279,980-21,089,367.78-8,757,981.50

Finding the Fourth Proportional to 15,279,980, 21,089,367.78 and 8,757,981.50

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Solution

The fourth proportional to 15,279,980, 21,089,367.78 and 8,757,981.50 is: 12,087,731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279,980 : 21,089,367.78 = 8,757,981.50 : x
  2. Step 2: Convert to fraction form
    15,279,980/21,089,367.78 = 8,757,981.50/x
  3. Step 3: Cross multiply
    15,279,980x = 21,089,367.78 × 8,757,981.50
  4. Step 4: Simplify right side
    15,279,980x = 184,700,292,863,936.09
  5. Step 5: Solve for x
    x = 184,700,292,863,936.09/15,279,980
  6. Step 6: Final answer
    x = 12,087,731.32

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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.