Home / 28,669.20-39,565.44-21,584.40

Finding the Fourth Proportional to 28,669.20, 39,565.44 and 21,584.40

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Solution

The fourth proportional to 28,669.20, 39,565.44 and 21,584.40 is: 29,787.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,669.20 : 39,565.44 = 21,584.40 : x
  2. Step 2: Convert to fraction form
    28,669.20/39,565.44 = 21,584.40/x
  3. Step 3: Cross multiply
    28,669.20x = 39,565.44 × 21,584.40
  4. Step 4: Simplify right side
    28,669.20x = 853,996,283.14
  5. Step 5: Solve for x
    x = 853,996,283.14/28,669.20
  6. Step 6: Final answer
    x = 29,787.94

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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.