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Finding the Fourth Proportional to 19,233.70, 28,851.90 and 10,917.70

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Solution

The fourth proportional to 19,233.70, 28,851.90 and 10,917.70 is: 16,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,233.70 : 28,851.90 = 10,917.70 : x
  2. Step 2: Convert to fraction form
    19,233.70/28,851.90 = 10,917.70/x
  3. Step 3: Cross multiply
    19,233.70x = 28,851.90 × 10,917.70
  4. Step 4: Simplify right side
    19,233.70x = 314,996,388.63
  5. Step 5: Solve for x
    x = 314,996,388.63/19,233.70
  6. Step 6: Final answer
    x = 16,377.32

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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.