Home / 27,864.96-38,453.12-15,289.60

Finding the Fourth Proportional to 27,864.96, 38,453.12 and 15,289.60

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Solution

The fourth proportional to 27,864.96, 38,453.12 and 15,289.60 is: 21,099.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,864.96 : 38,453.12 = 15,289.60 : x
  2. Step 2: Convert to fraction form
    27,864.96/38,453.12 = 15,289.60/x
  3. Step 3: Cross multiply
    27,864.96x = 38,453.12 × 15,289.60
  4. Step 4: Simplify right side
    27,864.96x = 587,932,823.55
  5. Step 5: Solve for x
    x = 587,932,823.55/27,864.96
  6. Step 6: Final answer
    x = 21,099.36

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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.