Home / 20,484.69-28,269.45-11,531.49

Finding the Fourth Proportional to 20,484.69, 28,269.45 and 11,531.49

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Solution

The fourth proportional to 20,484.69, 28,269.45 and 11,531.49 is: 15,913.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.69 : 28,269.45 = 11,531.49 : x
  2. Step 2: Convert to fraction form
    20,484.69/28,269.45 = 11,531.49/x
  3. Step 3: Cross multiply
    20,484.69x = 28,269.45 × 11,531.49
  4. Step 4: Simplify right side
    20,484.69x = 325,988,879.98
  5. Step 5: Solve for x
    x = 325,988,879.98/20,484.69
  6. Step 6: Final answer
    x = 15,913.78

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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.