Home / 20,735.58-28,621.38-19,677.72

Finding the Fourth Proportional to 20,735.58, 28,621.38 and 19,677.72

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Solution

The fourth proportional to 20,735.58, 28,621.38 and 19,677.72 is: 27,161.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.58 : 28,621.38 = 19,677.72 : x
  2. Step 2: Convert to fraction form
    20,735.58/28,621.38 = 19,677.72/x
  3. Step 3: Cross multiply
    20,735.58x = 28,621.38 × 19,677.72
  4. Step 4: Simplify right side
    20,735.58x = 563,203,501.65
  5. Step 5: Solve for x
    x = 563,203,501.65/20,735.58
  6. Step 6: Final answer
    x = 27,161.21

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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.