Home / 39,448.16-54,436.30-21,539.67

Finding the Fourth Proportional to 39,448.16, 54,436.30 and 21,539.67

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Solution

The fourth proportional to 39,448.16, 54,436.30 and 21,539.67 is: 29,723.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,448.16 : 54,436.30 = 21,539.67 : x
  2. Step 2: Convert to fraction form
    39,448.16/54,436.30 = 21,539.67/x
  3. Step 3: Cross multiply
    39,448.16x = 54,436.30 × 21,539.67
  4. Step 4: Simplify right side
    39,448.16x = 1,172,540,107.40
  5. Step 5: Solve for x
    x = 1,172,540,107.40/39,448.16
  6. Step 6: Final answer
    x = 29,723.57

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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.