Home / 18,371.22-25,352.24-9,987.72

Finding the Fourth Proportional to 18,371.22, 25,352.24 and 9,987.72

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Solution

The fourth proportional to 18,371.22, 25,352.24 and 9,987.72 is: 13,783.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,371.22 : 25,352.24 = 9,987.72 : x
  2. Step 2: Convert to fraction form
    18,371.22/25,352.24 = 9,987.72/x
  3. Step 3: Cross multiply
    18,371.22x = 25,352.24 × 9,987.72
  4. Step 4: Simplify right side
    18,371.22x = 253,211,024.55
  5. Step 5: Solve for x
    x = 253,211,024.55/18,371.22
  6. Step 6: Final answer
    x = 13,783.03

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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.