Home / 19,949.20-29,899.80-8,256.40

Finding the Fourth Proportional to 19,949.20, 29,899.80 and 8,256.40

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Solution

The fourth proportional to 19,949.20, 29,899.80 and 8,256.40 is: 12,374.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,949.20 : 29,899.80 = 8,256.40 : x
  2. Step 2: Convert to fraction form
    19,949.20/29,899.80 = 8,256.40/x
  3. Step 3: Cross multiply
    19,949.20x = 29,899.80 × 8,256.40
  4. Step 4: Simplify right side
    19,949.20x = 246,864,708.72
  5. Step 5: Solve for x
    x = 246,864,708.72/19,949.20
  6. Step 6: Final answer
    x = 12,374.67

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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.