Home / 20,432.40-28,200.96-12,051.60

Finding the Fourth Proportional to 20,432.40, 28,200.96 and 12,051.60

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Solution

The fourth proportional to 20,432.40, 28,200.96 and 12,051.60 is: 16,633.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.40 : 28,200.96 = 12,051.60 : x
  2. Step 2: Convert to fraction form
    20,432.40/28,200.96 = 12,051.60/x
  3. Step 3: Cross multiply
    20,432.40x = 28,200.96 × 12,051.60
  4. Step 4: Simplify right side
    20,432.40x = 339,866,689.54
  5. Step 5: Solve for x
    x = 339,866,689.54/20,432.40
  6. Step 6: Final answer
    x = 16,633.71

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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.