Home / 15,182.56-20,954.50-11,215.18

Finding the Fourth Proportional to 15,182.56, 20,954.50 and 11,215.18

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Solution

The fourth proportional to 15,182.56, 20,954.50 and 11,215.18 is: 15,478.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,182.56 : 20,954.50 = 11,215.18 : x
  2. Step 2: Convert to fraction form
    15,182.56/20,954.50 = 11,215.18/x
  3. Step 3: Cross multiply
    15,182.56x = 20,954.50 × 11,215.18
  4. Step 4: Simplify right side
    15,182.56x = 235,008,433.23
  5. Step 5: Solve for x
    x = 235,008,433.23/15,182.56
  6. Step 6: Final answer
    x = 15,478.84

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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.