Home / 20,763.30-28,652.22-11,331.66

Finding the Fourth Proportional to 20,763.30, 28,652.22 and 11,331.66

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Solution

The fourth proportional to 20,763.30, 28,652.22 and 11,331.66 is: 15,637.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.30 : 28,652.22 = 11,331.66 : x
  2. Step 2: Convert to fraction form
    20,763.30/28,652.22 = 11,331.66/x
  3. Step 3: Cross multiply
    20,763.30x = 28,652.22 × 11,331.66
  4. Step 4: Simplify right side
    20,763.30x = 324,677,215.29
  5. Step 5: Solve for x
    x = 324,677,215.29/20,763.30
  6. Step 6: Final answer
    x = 15,637.07

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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.