Home / 27,709.75-38,239.66-15,134.50

Finding the Fourth Proportional to 27,709.75, 38,239.66 and 15,134.50

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Solution

The fourth proportional to 27,709.75, 38,239.66 and 15,134.50 is: 20,885.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,709.75 : 38,239.66 = 15,134.50 : x
  2. Step 2: Convert to fraction form
    27,709.75/38,239.66 = 15,134.50/x
  3. Step 3: Cross multiply
    27,709.75x = 38,239.66 × 15,134.50
  4. Step 4: Simplify right side
    27,709.75x = 578,738,134.27
  5. Step 5: Solve for x
    x = 578,738,134.27/27,709.75
  6. Step 6: Final answer
    x = 20,885.72

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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.