Home / 39,477.54-54,479.21-21,572.85

Finding the Fourth Proportional to 39,477.54, 54,479.21 and 21,572.85

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Solution

The fourth proportional to 39,477.54, 54,479.21 and 21,572.85 is: 29,770.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,477.54 : 54,479.21 = 21,572.85 : x
  2. Step 2: Convert to fraction form
    39,477.54/54,479.21 = 21,572.85/x
  3. Step 3: Cross multiply
    39,477.54x = 54,479.21 × 21,572.85
  4. Step 4: Simplify right side
    39,477.54x = 1,175,271,717.58
  5. Step 5: Solve for x
    x = 1,175,271,717.58/39,477.54
  6. Step 6: Final answer
    x = 29,770.64

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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.