Home / 31,859.20-43,971.12-18,438.67

Finding the Fourth Proportional to 31,859.20, 43,971.12 and 18,438.67

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Solution

The fourth proportional to 31,859.20, 43,971.12 and 18,438.67 is: 25,448.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,859.20 : 43,971.12 = 18,438.67 : x
  2. Step 2: Convert to fraction form
    31,859.20/43,971.12 = 18,438.67/x
  3. Step 3: Cross multiply
    31,859.20x = 43,971.12 × 18,438.67
  4. Step 4: Simplify right side
    31,859.20x = 810,768,971.21
  5. Step 5: Solve for x
    x = 810,768,971.21/31,859.20
  6. Step 6: Final answer
    x = 25,448.50

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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.