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Finding the Fourth Proportional to 19,274.63, 28,911.95 and 5,423.63

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Solution

The fourth proportional to 19,274.63, 28,911.95 and 5,423.63 is: 8,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,274.63 : 28,911.95 = 5,423.63 : x
  2. Step 2: Convert to fraction form
    19,274.63/28,911.95 = 5,423.63/x
  3. Step 3: Cross multiply
    19,274.63x = 28,911.95 × 5,423.63
  4. Step 4: Simplify right side
    19,274.63x = 156,807,547.70
  5. Step 5: Solve for x
    x = 156,807,547.70/19,274.63
  6. Step 6: Final answer
    x = 8,135.44

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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.