Home / 20,602.75-28,432.36-11,651.60

Finding the Fourth Proportional to 20,602.75, 28,432.36 and 11,651.60

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Solution

The fourth proportional to 20,602.75, 28,432.36 and 11,651.60 is: 16,079.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.75 : 28,432.36 = 11,651.60 : x
  2. Step 2: Convert to fraction form
    20,602.75/28,432.36 = 11,651.60/x
  3. Step 3: Cross multiply
    20,602.75x = 28,432.36 × 11,651.60
  4. Step 4: Simplify right side
    20,602.75x = 331,282,314.49
  5. Step 5: Solve for x
    x = 331,282,314.49/20,602.75
  6. Step 6: Final answer
    x = 16,079.52

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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.