Home / 27,813.12-38,380.68-15,237.60

Finding the Fourth Proportional to 27,813.12, 38,380.68 and 15,237.60

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Solution

The fourth proportional to 27,813.12, 38,380.68 and 15,237.60 is: 21,027.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,813.12 : 38,380.68 = 15,237.60 : x
  2. Step 2: Convert to fraction form
    27,813.12/38,380.68 = 15,237.60/x
  3. Step 3: Cross multiply
    27,813.12x = 38,380.68 × 15,237.60
  4. Step 4: Simplify right side
    27,813.12x = 584,829,449.57
  5. Step 5: Solve for x
    x = 584,829,449.57/27,813.12
  6. Step 6: Final answer
    x = 21,027.11

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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.