Home / 15,615.96-21,542.58-9,645.48

Finding the Fourth Proportional to 15,615.96, 21,542.58 and 9,645.48

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Solution

The fourth proportional to 15,615.96, 21,542.58 and 9,645.48 is: 13,306.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.96 : 21,542.58 = 9,645.48 : x
  2. Step 2: Convert to fraction form
    15,615.96/21,542.58 = 9,645.48/x
  3. Step 3: Cross multiply
    15,615.96x = 21,542.58 × 9,645.48
  4. Step 4: Simplify right side
    15,615.96x = 207,788,524.54
  5. Step 5: Solve for x
    x = 207,788,524.54/15,615.96
  6. Step 6: Final answer
    x = 13,306.16

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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.