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Finding the Fourth Proportional to 15,000.39, 22,479.80 and 5,630.99

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Solution

The fourth proportional to 15,000.39, 22,479.80 and 5,630.99 is: 8,438.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.39 : 22,479.80 = 5,630.99 : x
  2. Step 2: Convert to fraction form
    15,000.39/22,479.80 = 5,630.99/x
  3. Step 3: Cross multiply
    15,000.39x = 22,479.80 × 5,630.99
  4. Step 4: Simplify right side
    15,000.39x = 126,583,388.45
  5. Step 5: Solve for x
    x = 126,583,388.45/15,000.39
  6. Step 6: Final answer
    x = 8,438.67

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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.