Home / 27,800.29-38,354.88-15,855.04

Finding the Fourth Proportional to 27,800.29, 38,354.88 and 15,855.04

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Solution

The fourth proportional to 27,800.29, 38,354.88 and 15,855.04 is: 21,874.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,800.29 : 38,354.88 = 15,855.04 : x
  2. Step 2: Convert to fraction form
    27,800.29/38,354.88 = 15,855.04/x
  3. Step 3: Cross multiply
    27,800.29x = 38,354.88 × 15,855.04
  4. Step 4: Simplify right side
    27,800.29x = 608,118,156.60
  5. Step 5: Solve for x
    x = 608,118,156.60/27,800.29
  6. Step 6: Final answer
    x = 21,874.53

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Half scale
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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.