Home / 39,478.58-54,481.22-21,574.69

Finding the Fourth Proportional to 39,478.58, 54,481.22 and 21,574.69

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Solution

The fourth proportional to 39,478.58, 54,481.22 and 21,574.69 is: 29,773.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,478.58 : 54,481.22 = 21,574.69 : x
  2. Step 2: Convert to fraction form
    39,478.58/54,481.22 = 21,574.69/x
  3. Step 3: Cross multiply
    39,478.58x = 54,481.22 × 21,574.69
  4. Step 4: Simplify right side
    39,478.58x = 1,175,415,432.32
  5. Step 5: Solve for x
    x = 1,175,415,432.32/39,478.58
  6. Step 6: Final answer
    x = 29,773.50

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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.