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Finding the Fourth Proportional to 19,221.68, 28,671.04 and 17,449.94

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Solution

The fourth proportional to 19,221.68, 28,671.04 and 17,449.94 is: 26,028.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.68 : 28,671.04 = 17,449.94 : x
  2. Step 2: Convert to fraction form
    19,221.68/28,671.04 = 17,449.94/x
  3. Step 3: Cross multiply
    19,221.68x = 28,671.04 × 17,449.94
  4. Step 4: Simplify right side
    19,221.68x = 500,307,927.74
  5. Step 5: Solve for x
    x = 500,307,927.74/19,221.68
  6. Step 6: Final answer
    x = 26,028.31

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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.