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Finding the Fourth Proportional to 28,497, 39,338.22 and 19,590.45

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Solution

The fourth proportional to 28,497, 39,338.22 and 19,590.45 is: 27,043.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,497 : 39,338.22 = 19,590.45 : x
  2. Step 2: Convert to fraction form
    28,497/39,338.22 = 19,590.45/x
  3. Step 3: Cross multiply
    28,497x = 39,338.22 × 19,590.45
  4. Step 4: Simplify right side
    28,497x = 770,653,432.00
  5. Step 5: Solve for x
    x = 770,653,432.00/28,497
  6. Step 6: Final answer
    x = 27,043.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.