Home / 39,033.02-53,865.57-21,128.03

Finding the Fourth Proportional to 39,033.02, 53,865.57 and 21,128.03

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Solution

The fourth proportional to 39,033.02, 53,865.57 and 21,128.03 is: 29,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,033.02 : 53,865.57 = 21,128.03 : x
  2. Step 2: Convert to fraction form
    39,033.02/53,865.57 = 21,128.03/x
  3. Step 3: Cross multiply
    39,033.02x = 53,865.57 × 21,128.03
  4. Step 4: Simplify right side
    39,033.02x = 1,138,073,378.93
  5. Step 5: Solve for x
    x = 1,138,073,378.93/39,033.02
  6. Step 6: Final answer
    x = 29,156.68

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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.