Home / 39,054.78-53,895.86-21,149.80

Finding the Fourth Proportional to 39,054.78, 53,895.86 and 21,149.80

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Solution

The fourth proportional to 39,054.78, 53,895.86 and 21,149.80 is: 29,186.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,054.78 : 53,895.86 = 21,149.80 : x
  2. Step 2: Convert to fraction form
    39,054.78/53,895.86 = 21,149.80/x
  3. Step 3: Cross multiply
    39,054.78x = 53,895.86 × 21,149.80
  4. Step 4: Simplify right side
    39,054.78x = 1,139,886,659.83
  5. Step 5: Solve for x
    x = 1,139,886,659.83/39,054.78
  6. Step 6: Final answer
    x = 29,186.87

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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.