Home / 39,029.60-53,860.78-21,124.60

Finding the Fourth Proportional to 39,029.60, 53,860.78 and 21,124.60

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Solution

The fourth proportional to 39,029.60, 53,860.78 and 21,124.60 is: 29,151.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,029.60 : 53,860.78 = 21,124.60 : x
  2. Step 2: Convert to fraction form
    39,029.60/53,860.78 = 21,124.60/x
  3. Step 3: Cross multiply
    39,029.60x = 53,860.78 × 21,124.60
  4. Step 4: Simplify right side
    39,029.60x = 1,137,787,433.19
  5. Step 5: Solve for x
    x = 1,137,787,433.19/39,029.60
  6. Step 6: Final answer
    x = 29,151.91

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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.