Home / 39,340.28-54,288.90-21,435.41

Finding the Fourth Proportional to 39,340.28, 54,288.90 and 21,435.41

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Solution

The fourth proportional to 39,340.28, 54,288.90 and 21,435.41 is: 29,580.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.28 : 54,288.90 = 21,435.41 : x
  2. Step 2: Convert to fraction form
    39,340.28/54,288.90 = 21,435.41/x
  3. Step 3: Cross multiply
    39,340.28x = 54,288.90 × 21,435.41
  4. Step 4: Simplify right side
    39,340.28x = 1,163,704,829.95
  5. Step 5: Solve for x
    x = 1,163,704,829.95/39,340.28
  6. Step 6: Final answer
    x = 29,580.49

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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.