Home / 39,378.60-54,342.50-21,473.64

Finding the Fourth Proportional to 39,378.60, 54,342.50 and 21,473.64

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Solution

The fourth proportional to 39,378.60, 54,342.50 and 21,473.64 is: 29,633.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,378.60 : 54,342.50 = 21,473.64 : x
  2. Step 2: Convert to fraction form
    39,378.60/54,342.50 = 21,473.64/x
  3. Step 3: Cross multiply
    39,378.60x = 54,342.50 × 21,473.64
  4. Step 4: Simplify right side
    39,378.60x = 1,166,931,174.33
  5. Step 5: Solve for x
    x = 1,166,931,174.33/39,378.60
  6. Step 6: Final answer
    x = 29,633.64

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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.