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Finding the Fourth Proportional to 19,177, 28,732.74 and 13,602.76

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Solution

The fourth proportional to 19,177, 28,732.74 and 13,602.76 is: 20,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,177 : 28,732.74 = 13,602.76 : x
  2. Step 2: Convert to fraction form
    19,177/28,732.74 = 13,602.76/x
  3. Step 3: Cross multiply
    19,177x = 28,732.74 × 13,602.76
  4. Step 4: Simplify right side
    19,177x = 390,844,566.36
  5. Step 5: Solve for x
    x = 390,844,566.36/19,177
  6. Step 6: Final answer
    x = 20,380.90

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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.