Home / 20,535,187.21-28,338,892.56-11,242,600.45

Finding the Fourth Proportional to 20,535,187.21, 28,338,892.56 and 11,242,600.45

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Solution

The fourth proportional to 20,535,187.21, 28,338,892.56 and 11,242,600.45 is: 15,514,971.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535,187.21 : 28,338,892.56 = 11,242,600.45 : x
  2. Step 2: Convert to fraction form
    20,535,187.21/28,338,892.56 = 11,242,600.45/x
  3. Step 3: Cross multiply
    20,535,187.21x = 28,338,892.56 × 11,242,600.45
  4. Step 4: Simplify right side
    20,535,187.21x = 318,602,846,247,557.62
  5. Step 5: Solve for x
    x = 318,602,846,247,557.62/20,535,187.21
  6. Step 6: Final answer
    x = 15,514,971.59

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1.5x scale

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.