Home / 27,905.03-38,486.68-18,354.72

Finding the Fourth Proportional to 27,905.03, 38,486.68 and 18,354.72

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Solution

The fourth proportional to 27,905.03, 38,486.68 and 18,354.72 is: 25,314.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,905.03 : 38,486.68 = 18,354.72 : x
  2. Step 2: Convert to fraction form
    27,905.03/38,486.68 = 18,354.72/x
  3. Step 3: Cross multiply
    27,905.03x = 38,486.68 × 18,354.72
  4. Step 4: Simplify right side
    27,905.03x = 706,412,333.57
  5. Step 5: Solve for x
    x = 706,412,333.57/27,905.03
  6. Step 6: Final answer
    x = 25,314.88

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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.