Home / 30,176.85-41,660.55-20,631.09

Finding the Fourth Proportional to 30,176.85, 41,660.55 and 20,631.09

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Solution

The fourth proportional to 30,176.85, 41,660.55 and 20,631.09 is: 28,482.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,176.85 : 41,660.55 = 20,631.09 : x
  2. Step 2: Convert to fraction form
    30,176.85/41,660.55 = 20,631.09/x
  3. Step 3: Cross multiply
    30,176.85x = 41,660.55 × 20,631.09
  4. Step 4: Simplify right side
    30,176.85x = 859,502,556.50
  5. Step 5: Solve for x
    x = 859,502,556.50/30,176.85
  6. Step 6: Final answer
    x = 28,482.18

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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.