Home / 39,479.58-54,480.27-21,574.80

Finding the Fourth Proportional to 39,479.58, 54,480.27 and 21,574.80

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Solution

The fourth proportional to 39,479.58, 54,480.27 and 21,574.80 is: 29,772.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,479.58 : 54,480.27 = 21,574.80 : x
  2. Step 2: Convert to fraction form
    39,479.58/54,480.27 = 21,574.80/x
  3. Step 3: Cross multiply
    39,479.58x = 54,480.27 × 21,574.80
  4. Step 4: Simplify right side
    39,479.58x = 1,175,400,929.20
  5. Step 5: Solve for x
    x = 1,175,400,929.20/39,479.58
  6. Step 6: Final answer
    x = 29,772.38

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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.