Home / 18,912.16-26,101.20-10,954.72

Finding the Fourth Proportional to 18,912.16, 26,101.20 and 10,954.72

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Solution

The fourth proportional to 18,912.16, 26,101.20 and 10,954.72 is: 15,118.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.16 : 26,101.20 = 10,954.72 : x
  2. Step 2: Convert to fraction form
    18,912.16/26,101.20 = 10,954.72/x
  3. Step 3: Cross multiply
    18,912.16x = 26,101.20 × 10,954.72
  4. Step 4: Simplify right side
    18,912.16x = 285,931,337.66
  5. Step 5: Solve for x
    x = 285,931,337.66/18,912.16
  6. Step 6: Final answer
    x = 15,118.91

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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.