Home / 20,133.45-30,200.18-19,987.65

Finding the Fourth Proportional to 20,133.45, 30,200.18 and 19,987.65

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Solution

The fourth proportional to 20,133.45, 30,200.18 and 19,987.65 is: 29,981.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.45 : 30,200.18 = 19,987.65 : x
  2. Step 2: Convert to fraction form
    20,133.45/30,200.18 = 19,987.65/x
  3. Step 3: Cross multiply
    20,133.45x = 30,200.18 × 19,987.65
  4. Step 4: Simplify right side
    20,133.45x = 603,630,527.84
  5. Step 5: Solve for x
    x = 603,630,527.84/20,133.45
  6. Step 6: Final answer
    x = 29,981.48

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.