Home / 27,764.88-38,315.48-15,189.64

Finding the Fourth Proportional to 27,764.88, 38,315.48 and 15,189.64

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Solution

The fourth proportional to 27,764.88, 38,315.48 and 15,189.64 is: 20,961.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,764.88 : 38,315.48 = 15,189.64 : x
  2. Step 2: Convert to fraction form
    27,764.88/38,315.48 = 15,189.64/x
  3. Step 3: Cross multiply
    27,764.88x = 38,315.48 × 15,189.64
  4. Step 4: Simplify right side
    27,764.88x = 581,998,347.63
  5. Step 5: Solve for x
    x = 581,998,347.63/27,764.88
  6. Step 6: Final answer
    x = 20,961.67

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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.