Home / 18,749.88-25,830.81-13,074.30

Finding the Fourth Proportional to 18,749.88, 25,830.81 and 13,074.30

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Solution

The fourth proportional to 18,749.88, 25,830.81 and 13,074.30 is: 18,011.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.88 : 25,830.81 = 13,074.30 : x
  2. Step 2: Convert to fraction form
    18,749.88/25,830.81 = 13,074.30/x
  3. Step 3: Cross multiply
    18,749.88x = 25,830.81 × 13,074.30
  4. Step 4: Simplify right side
    18,749.88x = 337,719,759.18
  5. Step 5: Solve for x
    x = 337,719,759.18/18,749.88
  6. Step 6: Final answer
    x = 18,011.84

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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.