Home / 27,864.78-38,453.40-15,289.50

Finding the Fourth Proportional to 27,864.78, 38,453.40 and 15,289.50

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Solution

The fourth proportional to 27,864.78, 38,453.40 and 15,289.50 is: 21,099.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,864.78 : 38,453.40 = 15,289.50 : x
  2. Step 2: Convert to fraction form
    27,864.78/38,453.40 = 15,289.50/x
  3. Step 3: Cross multiply
    27,864.78x = 38,453.40 × 15,289.50
  4. Step 4: Simplify right side
    27,864.78x = 587,933,259.30
  5. Step 5: Solve for x
    x = 587,933,259.30/27,864.78
  6. Step 6: Final answer
    x = 21,099.51

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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.