Home / 39,049.16-53,888.09-21,144.31

Finding the Fourth Proportional to 39,049.16, 53,888.09 and 21,144.31

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Solution

The fourth proportional to 39,049.16, 53,888.09 and 21,144.31 is: 29,179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,049.16 : 53,888.09 = 21,144.31 : x
  2. Step 2: Convert to fraction form
    39,049.16/53,888.09 = 21,144.31/x
  3. Step 3: Cross multiply
    39,049.16x = 53,888.09 × 21,144.31
  4. Step 4: Simplify right side
    39,049.16x = 1,139,426,239.83
  5. Step 5: Solve for x
    x = 1,139,426,239.83/39,049.16
  6. Step 6: Final answer
    x = 29,179.28

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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.