Home / 27,615.55-38,109.69-15,516.28

Finding the Fourth Proportional to 27,615.55, 38,109.69 and 15,516.28

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Solution

The fourth proportional to 27,615.55, 38,109.69 and 15,516.28 is: 21,412.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,615.55 : 38,109.69 = 15,516.28 : x
  2. Step 2: Convert to fraction form
    27,615.55/38,109.69 = 15,516.28/x
  3. Step 3: Cross multiply
    27,615.55x = 38,109.69 × 15,516.28
  4. Step 4: Simplify right side
    27,615.55x = 591,320,620.75
  5. Step 5: Solve for x
    x = 591,320,620.75/27,615.55
  6. Step 6: Final answer
    x = 21,412.60

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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.