Home / 20,432.51-28,212.60-16,471.31

Finding the Fourth Proportional to 20,432.51, 28,212.60 and 16,471.31

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Solution

The fourth proportional to 20,432.51, 28,212.60 and 16,471.31 is: 22,743.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.51 : 28,212.60 = 16,471.31 : x
  2. Step 2: Convert to fraction form
    20,432.51/28,212.60 = 16,471.31/x
  3. Step 3: Cross multiply
    20,432.51x = 28,212.60 × 16,471.31
  4. Step 4: Simplify right side
    20,432.51x = 464,698,339.44
  5. Step 5: Solve for x
    x = 464,698,339.44/20,432.51
  6. Step 6: Final answer
    x = 22,743.09

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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.