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Finding the Fourth Proportional to 15,200.70, 21,076.49 and 14,423.10

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Solution

The fourth proportional to 15,200.70, 21,076.49 and 14,423.10 is: 19,998.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.70 : 21,076.49 = 14,423.10 : x
  2. Step 2: Convert to fraction form
    15,200.70/21,076.49 = 14,423.10/x
  3. Step 3: Cross multiply
    15,200.70x = 21,076.49 × 14,423.10
  4. Step 4: Simplify right side
    15,200.70x = 303,988,250.80
  5. Step 5: Solve for x
    x = 303,988,250.80/15,200.70
  6. Step 6: Final answer
    x = 19,998.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.