Home / 39,140.55-54,014.18-21,235.59

Finding the Fourth Proportional to 39,140.55, 54,014.18 and 21,235.59

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Solution

The fourth proportional to 39,140.55, 54,014.18 and 21,235.59 is: 29,305.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,140.55 : 54,014.18 = 21,235.59 : x
  2. Step 2: Convert to fraction form
    39,140.55/54,014.18 = 21,235.59/x
  3. Step 3: Cross multiply
    39,140.55x = 54,014.18 × 21,235.59
  4. Step 4: Simplify right side
    39,140.55x = 1,147,022,874.49
  5. Step 5: Solve for x
    x = 1,147,022,874.49/39,140.55
  6. Step 6: Final answer
    x = 29,305.23

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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.