Home / 18,725.75-25,782.57-15,887.24

Finding the Fourth Proportional to 18,725.75, 25,782.57 and 15,887.24

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Solution

The fourth proportional to 18,725.75, 25,782.57 and 15,887.24 is: 21,874.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.75 : 25,782.57 = 15,887.24 : x
  2. Step 2: Convert to fraction form
    18,725.75/25,782.57 = 15,887.24/x
  3. Step 3: Cross multiply
    18,725.75x = 25,782.57 × 15,887.24
  4. Step 4: Simplify right side
    18,725.75x = 409,613,748.49
  5. Step 5: Solve for x
    x = 409,613,748.49/18,725.75
  6. Step 6: Final answer
    x = 21,874.36

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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.