Home / 27,827.55-38,371.12-21,439.89

Finding the Fourth Proportional to 27,827.55, 38,371.12 and 21,439.89

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Solution

The fourth proportional to 27,827.55, 38,371.12 and 21,439.89 is: 29,563.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,827.55 : 38,371.12 = 21,439.89 : x
  2. Step 2: Convert to fraction form
    27,827.55/38,371.12 = 21,439.89/x
  3. Step 3: Cross multiply
    27,827.55x = 38,371.12 × 21,439.89
  4. Step 4: Simplify right side
    27,827.55x = 822,672,538.38
  5. Step 5: Solve for x
    x = 822,672,538.38/27,827.55
  6. Step 6: Final answer
    x = 29,563.24

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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.