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Finding the Fourth Proportional to 19,364.70, 28,998.45 and 15,476.70

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Solution

The fourth proportional to 19,364.70, 28,998.45 and 15,476.70 is: 23,176.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,364.70 : 28,998.45 = 15,476.70 : x
  2. Step 2: Convert to fraction form
    19,364.70/28,998.45 = 15,476.70/x
  3. Step 3: Cross multiply
    19,364.70x = 28,998.45 × 15,476.70
  4. Step 4: Simplify right side
    19,364.70x = 448,800,311.12
  5. Step 5: Solve for x
    x = 448,800,311.12/19,364.70
  6. Step 6: Final answer
    x = 23,176.21

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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.