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Finding the Fourth Proportional to 19,455.71, 28,998.49 and 18,348.44

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Solution

The fourth proportional to 19,455.71, 28,998.49 and 18,348.44 is: 27,348.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,455.71 : 28,998.49 = 18,348.44 : x
  2. Step 2: Convert to fraction form
    19,455.71/28,998.49 = 18,348.44/x
  3. Step 3: Cross multiply
    19,455.71x = 28,998.49 × 18,348.44
  4. Step 4: Simplify right side
    19,455.71x = 532,077,053.86
  5. Step 5: Solve for x
    x = 532,077,053.86/19,455.71
  6. Step 6: Final answer
    x = 27,348.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.