Home / 39,359.02-54,315.09-21,454.03

Finding the Fourth Proportional to 39,359.02, 54,315.09 and 21,454.03

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Solution

The fourth proportional to 39,359.02, 54,315.09 and 21,454.03 is: 29,606.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,359.02 : 54,315.09 = 21,454.03 : x
  2. Step 2: Convert to fraction form
    39,359.02/54,315.09 = 21,454.03/x
  3. Step 3: Cross multiply
    39,359.02x = 54,315.09 × 21,454.03
  4. Step 4: Simplify right side
    39,359.02x = 1,165,277,570.31
  5. Step 5: Solve for x
    x = 1,165,277,570.31/39,359.02
  6. Step 6: Final answer
    x = 29,606.37

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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.