Home / 19,857.20-29,742.60-12,052.40

Finding the Fourth Proportional to 19,857.20, 29,742.60 and 12,052.40

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Solution

The fourth proportional to 19,857.20, 29,742.60 and 12,052.40 is: 18,052.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.20 : 29,742.60 = 12,052.40 : x
  2. Step 2: Convert to fraction form
    19,857.20/29,742.60 = 12,052.40/x
  3. Step 3: Cross multiply
    19,857.20x = 29,742.60 × 12,052.40
  4. Step 4: Simplify right side
    19,857.20x = 358,469,712.24
  5. Step 5: Solve for x
    x = 358,469,712.24/19,857.20
  6. Step 6: Final answer
    x = 18,052.38

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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.