Home / 18,670.85-25,765.41-10,172.87

Finding the Fourth Proportional to 18,670.85, 25,765.41 and 10,172.87

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Solution

The fourth proportional to 18,670.85, 25,765.41 and 10,172.87 is: 14,038.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.85 : 25,765.41 = 10,172.87 : x
  2. Step 2: Convert to fraction form
    18,670.85/25,765.41 = 10,172.87/x
  3. Step 3: Cross multiply
    18,670.85x = 25,765.41 × 10,172.87
  4. Step 4: Simplify right side
    18,670.85x = 262,107,986.74
  5. Step 5: Solve for x
    x = 262,107,986.74/18,670.85
  6. Step 6: Final answer
    x = 14,038.36

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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.