Home / 20,680.02-28,538.73-12,717.54

Finding the Fourth Proportional to 20,680.02, 28,538.73 and 12,717.54

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Solution

The fourth proportional to 20,680.02, 28,538.73 and 12,717.54 is: 17,550.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.02 : 28,538.73 = 12,717.54 : x
  2. Step 2: Convert to fraction form
    20,680.02/28,538.73 = 12,717.54/x
  3. Step 3: Cross multiply
    20,680.02x = 28,538.73 × 12,717.54
  4. Step 4: Simplify right side
    20,680.02x = 362,942,440.32
  5. Step 5: Solve for x
    x = 362,942,440.32/20,680.02
  6. Step 6: Final answer
    x = 17,550.39

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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.