Home / 39,284.30-54,211.29-21,378.92

Finding the Fourth Proportional to 39,284.30, 54,211.29 and 21,378.92

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Solution

The fourth proportional to 39,284.30, 54,211.29 and 21,378.92 is: 29,502.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,284.30 : 54,211.29 = 21,378.92 : x
  2. Step 2: Convert to fraction form
    39,284.30/54,211.29 = 21,378.92/x
  3. Step 3: Cross multiply
    39,284.30x = 54,211.29 × 21,378.92
  4. Step 4: Simplify right side
    39,284.30x = 1,158,978,764.24
  5. Step 5: Solve for x
    x = 1,158,978,764.24/39,284.30
  6. Step 6: Final answer
    x = 29,502.34

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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.