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Finding the Fourth Proportional to 19,274.28, 28,911.51 and 5,947.11

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Solution

The fourth proportional to 19,274.28, 28,911.51 and 5,947.11 is: 8,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,274.28 : 28,911.51 = 5,947.11 : x
  2. Step 2: Convert to fraction form
    19,274.28/28,911.51 = 5,947.11/x
  3. Step 3: Cross multiply
    19,274.28x = 28,911.51 × 5,947.11
  4. Step 4: Simplify right side
    19,274.28x = 171,939,930.24
  5. Step 5: Solve for x
    x = 171,939,930.24/19,274.28
  6. Step 6: Final answer
    x = 8,920.69

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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.