Home / 39,389.94-54,358.85-21,485.59

Finding the Fourth Proportional to 39,389.94, 54,358.85 and 21,485.59

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Solution

The fourth proportional to 39,389.94, 54,358.85 and 21,485.59 is: 29,650.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,389.94 : 54,358.85 = 21,485.59 : x
  2. Step 2: Convert to fraction form
    39,389.94/54,358.85 = 21,485.59/x
  3. Step 3: Cross multiply
    39,389.94x = 54,358.85 × 21,485.59
  4. Step 4: Simplify right side
    39,389.94x = 1,167,931,963.97
  5. Step 5: Solve for x
    x = 1,167,931,963.97/39,389.94
  6. Step 6: Final answer
    x = 29,650.51

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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.