Home / 20,675.41-28,520.02-15,003.56

Finding the Fourth Proportional to 20,675.41, 28,520.02 and 15,003.56

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Solution

The fourth proportional to 20,675.41, 28,520.02 and 15,003.56 is: 20,696.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.41 : 28,520.02 = 15,003.56 : x
  2. Step 2: Convert to fraction form
    20,675.41/28,520.02 = 15,003.56/x
  3. Step 3: Cross multiply
    20,675.41x = 28,520.02 × 15,003.56
  4. Step 4: Simplify right side
    20,675.41x = 427,901,921.33
  5. Step 5: Solve for x
    x = 427,901,921.33/20,675.41
  6. Step 6: Final answer
    x = 20,696.17

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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.