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Finding the Fourth Proportional to 19,211.43, 28,810.65 and 9,344.43

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Solution

The fourth proportional to 19,211.43, 28,810.65 and 9,344.43 is: 14,013.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.43 : 28,810.65 = 9,344.43 : x
  2. Step 2: Convert to fraction form
    19,211.43/28,810.65 = 9,344.43/x
  3. Step 3: Cross multiply
    19,211.43x = 28,810.65 × 9,344.43
  4. Step 4: Simplify right side
    19,211.43x = 269,219,102.18
  5. Step 5: Solve for x
    x = 269,219,102.18/19,211.43
  6. Step 6: Final answer
    x = 14,013.49

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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.