Home / 18,206.90-25,126.20-10,140.86

Finding the Fourth Proportional to 18,206.90, 25,126.20 and 10,140.86

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Solution

The fourth proportional to 18,206.90, 25,126.20 and 10,140.86 is: 13,994.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,206.90 : 25,126.20 = 10,140.86 : x
  2. Step 2: Convert to fraction form
    18,206.90/25,126.20 = 10,140.86/x
  3. Step 3: Cross multiply
    18,206.90x = 25,126.20 × 10,140.86
  4. Step 4: Simplify right side
    18,206.90x = 254,801,125.55
  5. Step 5: Solve for x
    x = 254,801,125.55/18,206.90
  6. Step 6: Final answer
    x = 13,994.75

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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.