Home / 27,687.96-38,210.04-15,112.80

Finding the Fourth Proportional to 27,687.96, 38,210.04 and 15,112.80

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Solution

The fourth proportional to 27,687.96, 38,210.04 and 15,112.80 is: 20,856.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.96 : 38,210.04 = 15,112.80 : x
  2. Step 2: Convert to fraction form
    27,687.96/38,210.04 = 15,112.80/x
  3. Step 3: Cross multiply
    27,687.96x = 38,210.04 × 15,112.80
  4. Step 4: Simplify right side
    27,687.96x = 577,460,692.51
  5. Step 5: Solve for x
    x = 577,460,692.51/27,687.96
  6. Step 6: Final answer
    x = 20,856.02

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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.