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Finding the Fourth Proportional to 19,137.98, 28,705.17 and 6,654.98

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Solution

The fourth proportional to 19,137.98, 28,705.17 and 6,654.98 is: 9,981.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.98 : 28,705.17 = 6,654.98 : x
  2. Step 2: Convert to fraction form
    19,137.98/28,705.17 = 6,654.98/x
  3. Step 3: Cross multiply
    19,137.98x = 28,705.17 × 6,654.98
  4. Step 4: Simplify right side
    19,137.98x = 191,032,332.25
  5. Step 5: Solve for x
    x = 191,032,332.25/19,137.98
  6. Step 6: Final answer
    x = 9,981.84

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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.