Home / 27,710.64-38,215.17-18,771.30

Finding the Fourth Proportional to 27,710.64, 38,215.17 and 18,771.30

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Solution

The fourth proportional to 27,710.64, 38,215.17 and 18,771.30 is: 25,887.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,710.64 : 38,215.17 = 18,771.30 : x
  2. Step 2: Convert to fraction form
    27,710.64/38,215.17 = 18,771.30/x
  3. Step 3: Cross multiply
    27,710.64x = 38,215.17 × 18,771.30
  4. Step 4: Simplify right side
    27,710.64x = 717,348,420.62
  5. Step 5: Solve for x
    x = 717,348,420.62/27,710.64
  6. Step 6: Final answer
    x = 25,887.11

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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.