Home / 20,634,355.78-28,473,150.09-11,931,211.54

Finding the Fourth Proportional to 20,634,355.78, 28,473,150.09 and 11,931,211.54

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Solution

The fourth proportional to 20,634,355.78, 28,473,150.09 and 11,931,211.54 is: 16,463,764.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634,355.78 : 28,473,150.09 = 11,931,211.54 : x
  2. Step 2: Convert to fraction form
    20,634,355.78/28,473,150.09 = 11,931,211.54/x
  3. Step 3: Cross multiply
    20,634,355.78x = 28,473,150.09 × 11,931,211.54
  4. Step 4: Simplify right side
    20,634,355.78x = 339,719,176,933,960
  5. Step 5: Solve for x
    x = 339,719,176,933,960/20,634,355.78
  6. Step 6: Final answer
    x = 16,463,764.63

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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.