Home / 15,924.69-21,976.56-9,209.70

Finding the Fourth Proportional to 15,924.69, 21,976.56 and 9,209.70

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Solution

The fourth proportional to 15,924.69, 21,976.56 and 9,209.70 is: 12,709.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,924.69 : 21,976.56 = 9,209.70 : x
  2. Step 2: Convert to fraction form
    15,924.69/21,976.56 = 9,209.70/x
  3. Step 3: Cross multiply
    15,924.69x = 21,976.56 × 9,209.70
  4. Step 4: Simplify right side
    15,924.69x = 202,397,524.63
  5. Step 5: Solve for x
    x = 202,397,524.63/15,924.69
  6. Step 6: Final answer
    x = 12,709.67

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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.