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Finding the Fourth Proportional to 18,509.10, 25,524.62 and 15,676.26

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Solution

The fourth proportional to 18,509.10, 25,524.62 and 15,676.26 is: 21,618.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.10 : 25,524.62 = 15,676.26 : x
  2. Step 2: Convert to fraction form
    18,509.10/25,524.62 = 15,676.26/x
  3. Step 3: Cross multiply
    18,509.10x = 25,524.62 × 15,676.26
  4. Step 4: Simplify right side
    18,509.10x = 400,130,579.52
  5. Step 5: Solve for x
    x = 400,130,579.52/18,509.10
  6. Step 6: Final answer
    x = 21,618.05

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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.