Home / 18,554.71-27,789-18,416.43

Finding the Fourth Proportional to 18,554.71, 27,789 and 18,416.43

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Solution

The fourth proportional to 18,554.71, 27,789 and 18,416.43 is: 27,581.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,554.71 : 27,789 = 18,416.43 : x
  2. Step 2: Convert to fraction form
    18,554.71/27,789 = 18,416.43/x
  3. Step 3: Cross multiply
    18,554.71x = 27,789 × 18,416.43
  4. Step 4: Simplify right side
    18,554.71x = 511,774,173.27
  5. Step 5: Solve for x
    x = 511,774,173.27/18,554.71
  6. Step 6: Final answer
    x = 27,581.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.