Home / 20,082.40-27,713.77-11,130.05

Finding the Fourth Proportional to 20,082.40, 27,713.77 and 11,130.05

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Solution

The fourth proportional to 20,082.40, 27,713.77 and 11,130.05 is: 15,359.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.40 : 27,713.77 = 11,130.05 : x
  2. Step 2: Convert to fraction form
    20,082.40/27,713.77 = 11,130.05/x
  3. Step 3: Cross multiply
    20,082.40x = 27,713.77 × 11,130.05
  4. Step 4: Simplify right side
    20,082.40x = 308,455,645.79
  5. Step 5: Solve for x
    x = 308,455,645.79/20,082.40
  6. Step 6: Final answer
    x = 15,359.50

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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.