Home / 20,485.49-28,268.02-15,110.85

Finding the Fourth Proportional to 20,485.49, 28,268.02 and 15,110.85

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Solution

The fourth proportional to 20,485.49, 28,268.02 and 15,110.85 is: 20,851.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.49 : 28,268.02 = 15,110.85 : x
  2. Step 2: Convert to fraction form
    20,485.49/28,268.02 = 15,110.85/x
  3. Step 3: Cross multiply
    20,485.49x = 28,268.02 × 15,110.85
  4. Step 4: Simplify right side
    20,485.49x = 427,153,810.02
  5. Step 5: Solve for x
    x = 427,153,810.02/20,485.49
  6. Step 6: Final answer
    x = 20,851.53

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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.