Home / 19,880.96-27,445.32-18,279.76

Finding the Fourth Proportional to 19,880.96, 27,445.32 and 18,279.76

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Solution

The fourth proportional to 19,880.96, 27,445.32 and 18,279.76 is: 25,234.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.96 : 27,445.32 = 18,279.76 : x
  2. Step 2: Convert to fraction form
    19,880.96/27,445.32 = 18,279.76/x
  3. Step 3: Cross multiply
    19,880.96x = 27,445.32 × 18,279.76
  4. Step 4: Simplify right side
    19,880.96x = 501,693,862.72
  5. Step 5: Solve for x
    x = 501,693,862.72/19,880.96
  6. Step 6: Final answer
    x = 25,234.89

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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.