Home / 15,756.23-21,743.55-8,682.65

Finding the Fourth Proportional to 15,756.23, 21,743.55 and 8,682.65

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Solution

The fourth proportional to 15,756.23, 21,743.55 and 8,682.65 is: 11,982.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.23 : 21,743.55 = 8,682.65 : x
  2. Step 2: Convert to fraction form
    15,756.23/21,743.55 = 8,682.65/x
  3. Step 3: Cross multiply
    15,756.23x = 21,743.55 × 8,682.65
  4. Step 4: Simplify right side
    15,756.23x = 188,791,580.05
  5. Step 5: Solve for x
    x = 188,791,580.05/15,756.23
  6. Step 6: Final answer
    x = 11,982.03

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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.