Home / 18,968.46-28,429.65-13,423.43

Finding the Fourth Proportional to 18,968.46, 28,429.65 and 13,423.43

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Solution

The fourth proportional to 18,968.46, 28,429.65 and 13,423.43 is: 20,118.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.46 : 28,429.65 = 13,423.43 : x
  2. Step 2: Convert to fraction form
    18,968.46/28,429.65 = 13,423.43/x
  3. Step 3: Cross multiply
    18,968.46x = 28,429.65 × 13,423.43
  4. Step 4: Simplify right side
    18,968.46x = 381,623,274.55
  5. Step 5: Solve for x
    x = 381,623,274.55/18,968.46
  6. Step 6: Final answer
    x = 20,118.83

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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.