Home / 39,387.94-54,400.70-28,680.68

Finding the Fourth Proportional to 39,387.94, 54,400.70 and 28,680.68

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Solution

The fourth proportional to 39,387.94, 54,400.70 and 28,680.68 is: 39,612.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,387.94 : 54,400.70 = 28,680.68 : x
  2. Step 2: Convert to fraction form
    39,387.94/54,400.70 = 28,680.68/x
  3. Step 3: Cross multiply
    39,387.94x = 54,400.70 × 28,680.68
  4. Step 4: Simplify right side
    39,387.94x = 1,560,249,114.85
  5. Step 5: Solve for x
    x = 1,560,249,114.85/39,387.94
  6. Step 6: Final answer
    x = 39,612.36

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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.