Home / 15,694.67-21,649.60-9,403.40

Finding the Fourth Proportional to 15,694.67, 21,649.60 and 9,403.40

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Solution

The fourth proportional to 15,694.67, 21,649.60 and 9,403.40 is: 12,971.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,694.67 : 21,649.60 = 9,403.40 : x
  2. Step 2: Convert to fraction form
    15,694.67/21,649.60 = 9,403.40/x
  3. Step 3: Cross multiply
    15,694.67x = 21,649.60 × 9,403.40
  4. Step 4: Simplify right side
    15,694.67x = 203,579,801.62
  5. Step 5: Solve for x
    x = 203,579,801.62/15,694.67
  6. Step 6: Final answer
    x = 12,971.27

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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.