Home / 15,664.67-21,620.39-9,294.80

Finding the Fourth Proportional to 15,664.67, 21,620.39 and 9,294.80

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Solution

The fourth proportional to 15,664.67, 21,620.39 and 9,294.80 is: 12,828.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.67 : 21,620.39 = 9,294.80 : x
  2. Step 2: Convert to fraction form
    15,664.67/21,620.39 = 9,294.80/x
  3. Step 3: Cross multiply
    15,664.67x = 21,620.39 × 9,294.80
  4. Step 4: Simplify right side
    15,664.67x = 200,957,200.97
  5. Step 5: Solve for x
    x = 200,957,200.97/15,664.67
  6. Step 6: Final answer
    x = 12,828.69

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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.