Home / 20,698.65-28,513.44-15,016.62

Finding the Fourth Proportional to 20,698.65, 28,513.44 and 15,016.62

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Solution

The fourth proportional to 20,698.65, 28,513.44 and 15,016.62 is: 20,686.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.65 : 28,513.44 = 15,016.62 : x
  2. Step 2: Convert to fraction form
    20,698.65/28,513.44 = 15,016.62/x
  3. Step 3: Cross multiply
    20,698.65x = 28,513.44 × 15,016.62
  4. Step 4: Simplify right side
    20,698.65x = 428,175,493.37
  5. Step 5: Solve for x
    x = 428,175,493.37/20,698.65
  6. Step 6: Final answer
    x = 20,686.16

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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.