Home / 18,694.90-28,047.30-8,160.40

Finding the Fourth Proportional to 18,694.90, 28,047.30 and 8,160.40

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Solution

The fourth proportional to 18,694.90, 28,047.30 and 8,160.40 is: 12,242.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.90 : 28,047.30 = 8,160.40 : x
  2. Step 2: Convert to fraction form
    18,694.90/28,047.30 = 8,160.40/x
  3. Step 3: Cross multiply
    18,694.90x = 28,047.30 × 8,160.40
  4. Step 4: Simplify right side
    18,694.90x = 228,877,186.92
  5. Step 5: Solve for x
    x = 228,877,186.92/18,694.90
  6. Step 6: Final answer
    x = 12,242.76

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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.