Home / 39,054.89-53,895.79-21,149.92

Finding the Fourth Proportional to 39,054.89, 53,895.79 and 21,149.92

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Solution

The fourth proportional to 39,054.89, 53,895.79 and 21,149.92 is: 29,186.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,054.89 : 53,895.79 = 21,149.92 : x
  2. Step 2: Convert to fraction form
    39,054.89/53,895.79 = 21,149.92/x
  3. Step 3: Cross multiply
    39,054.89x = 53,895.79 × 21,149.92
  4. Step 4: Simplify right side
    39,054.89x = 1,139,891,646.84
  5. Step 5: Solve for x
    x = 1,139,891,646.84/39,054.89
  6. Step 6: Final answer
    x = 29,186.91

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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.