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Finding the Fourth Proportional to 18,779.16, 25,904.04 and 11,704.20

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Solution

The fourth proportional to 18,779.16, 25,904.04 and 11,704.20 is: 16,144.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.16 : 25,904.04 = 11,704.20 : x
  2. Step 2: Convert to fraction form
    18,779.16/25,904.04 = 11,704.20/x
  3. Step 3: Cross multiply
    18,779.16x = 25,904.04 × 11,704.20
  4. Step 4: Simplify right side
    18,779.16x = 303,186,064.97
  5. Step 5: Solve for x
    x = 303,186,064.97/18,779.16
  6. Step 6: Final answer
    x = 16,144.82

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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.