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Finding the Fourth Proportional to 18,677.88, 28,009.26 and 7,590.06

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Solution

The fourth proportional to 18,677.88, 28,009.26 and 7,590.06 is: 11,382.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677.88 : 28,009.26 = 7,590.06 : x
  2. Step 2: Convert to fraction form
    18,677.88/28,009.26 = 7,590.06/x
  3. Step 3: Cross multiply
    18,677.88x = 28,009.26 × 7,590.06
  4. Step 4: Simplify right side
    18,677.88x = 212,591,963.96
  5. Step 5: Solve for x
    x = 212,591,963.96/18,677.88
  6. Step 6: Final answer
    x = 11,382.02

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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.