Home / 39,340.53-54,289.23-21,435.68

Finding the Fourth Proportional to 39,340.53, 54,289.23 and 21,435.68

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Solution

The fourth proportional to 39,340.53, 54,289.23 and 21,435.68 is: 29,580.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.53 : 54,289.23 = 21,435.68 : x
  2. Step 2: Convert to fraction form
    39,340.53/54,289.23 = 21,435.68/x
  3. Step 3: Cross multiply
    39,340.53x = 54,289.23 × 21,435.68
  4. Step 4: Simplify right side
    39,340.53x = 1,163,726,290.28
  5. Step 5: Solve for x
    x = 1,163,726,290.28/39,340.53
  6. Step 6: Final answer
    x = 29,580.85

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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.