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Finding the Fourth Proportional to 18,865.70, 28,298.55 and 17,051.30

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Solution

The fourth proportional to 18,865.70, 28,298.55 and 17,051.30 is: 25,576.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.70 : 28,298.55 = 17,051.30 : x
  2. Step 2: Convert to fraction form
    18,865.70/28,298.55 = 17,051.30/x
  3. Step 3: Cross multiply
    18,865.70x = 28,298.55 × 17,051.30
  4. Step 4: Simplify right side
    18,865.70x = 482,527,065.62
  5. Step 5: Solve for x
    x = 482,527,065.62/18,865.70
  6. Step 6: Final answer
    x = 25,576.95

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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.