Home / 39,378.54-54,341.19-21,473.91

Finding the Fourth Proportional to 39,378.54, 54,341.19 and 21,473.91

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Solution

The fourth proportional to 39,378.54, 54,341.19 and 21,473.91 is: 29,633.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,378.54 : 54,341.19 = 21,473.91 : x
  2. Step 2: Convert to fraction form
    39,378.54/54,341.19 = 21,473.91/x
  3. Step 3: Cross multiply
    39,378.54x = 54,341.19 × 21,473.91
  4. Step 4: Simplify right side
    39,378.54x = 1,166,917,823.35
  5. Step 5: Solve for x
    x = 1,166,917,823.35/39,378.54
  6. Step 6: Final answer
    x = 29,633.34

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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.