Home / 27,865.89-38,454.55-15,290.64

Finding the Fourth Proportional to 27,865.89, 38,454.55 and 15,290.64

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Solution

The fourth proportional to 27,865.89, 38,454.55 and 15,290.64 is: 21,100.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,865.89 : 38,454.55 = 15,290.64 : x
  2. Step 2: Convert to fraction form
    27,865.89/38,454.55 = 15,290.64/x
  3. Step 3: Cross multiply
    27,865.89x = 38,454.55 × 15,290.64
  4. Step 4: Simplify right side
    27,865.89x = 587,994,642.19
  5. Step 5: Solve for x
    x = 587,994,642.19/27,865.89
  6. Step 6: Final answer
    x = 21,100.87

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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.