Home / 11,077.85-15,365.77-10,678.89

Finding the Fourth Proportional to 11,077.85, 15,365.77 and 10,678.89

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Solution

The fourth proportional to 11,077.85, 15,365.77 and 10,678.89 is: 14,812.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,077.85 : 15,365.77 = 10,678.89 : x
  2. Step 2: Convert to fraction form
    11,077.85/15,365.77 = 10,678.89/x
  3. Step 3: Cross multiply
    11,077.85x = 15,365.77 × 10,678.89
  4. Step 4: Simplify right side
    11,077.85x = 164,089,367.60
  5. Step 5: Solve for x
    x = 164,089,367.60/11,077.85
  6. Step 6: Final answer
    x = 14,812.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.