Home / 27,876.88-38,485.02-21,489.52

Finding the Fourth Proportional to 27,876.88, 38,485.02 and 21,489.52

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Solution

The fourth proportional to 27,876.88, 38,485.02 and 21,489.52 is: 29,667.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,876.88 : 38,485.02 = 21,489.52 : x
  2. Step 2: Convert to fraction form
    27,876.88/38,485.02 = 21,489.52/x
  3. Step 3: Cross multiply
    27,876.88x = 38,485.02 × 21,489.52
  4. Step 4: Simplify right side
    27,876.88x = 827,024,606.99
  5. Step 5: Solve for x
    x = 827,024,606.99/27,876.88
  6. Step 6: Final answer
    x = 29,667.04

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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.