Home / 20,319.42-30,479.13-8,624.45

Finding the Fourth Proportional to 20,319.42, 30,479.13 and 8,624.45

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Solution

The fourth proportional to 20,319.42, 30,479.13 and 8,624.45 is: 12,936.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.42 : 30,479.13 = 8,624.45 : x
  2. Step 2: Convert to fraction form
    20,319.42/30,479.13 = 8,624.45/x
  3. Step 3: Cross multiply
    20,319.42x = 30,479.13 × 8,624.45
  4. Step 4: Simplify right side
    20,319.42x = 262,865,580.33
  5. Step 5: Solve for x
    x = 262,865,580.33/20,319.42
  6. Step 6: Final answer
    x = 12,936.67

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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.