Home / 39,378.52-54,341.40-21,473.92

Finding the Fourth Proportional to 39,378.52, 54,341.40 and 21,473.92

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Solution

The fourth proportional to 39,378.52, 54,341.40 and 21,473.92 is: 29,633.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,378.52 : 54,341.40 = 21,473.92 : x
  2. Step 2: Convert to fraction form
    39,378.52/54,341.40 = 21,473.92/x
  3. Step 3: Cross multiply
    39,378.52x = 54,341.40 × 21,473.92
  4. Step 4: Simplify right side
    39,378.52x = 1,166,922,876.29
  5. Step 5: Solve for x
    x = 1,166,922,876.29/39,378.52
  6. Step 6: Final answer
    x = 29,633.49

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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.