Home / 27,699.96-38,257.77-20,179.92

Finding the Fourth Proportional to 27,699.96, 38,257.77 and 20,179.92

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Solution

The fourth proportional to 27,699.96, 38,257.77 and 20,179.92 is: 27,871.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,699.96 : 38,257.77 = 20,179.92 : x
  2. Step 2: Convert to fraction form
    27,699.96/38,257.77 = 20,179.92/x
  3. Step 3: Cross multiply
    27,699.96x = 38,257.77 × 20,179.92
  4. Step 4: Simplify right side
    27,699.96x = 772,038,637.08
  5. Step 5: Solve for x
    x = 772,038,637.08/27,699.96
  6. Step 6: Final answer
    x = 27,871.47

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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.