Home / 11,921.76-17,870.40-4,523.04

Finding the Fourth Proportional to 11,921.76, 17,870.40 and 4,523.04

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Solution

The fourth proportional to 11,921.76, 17,870.40 and 4,523.04 is: 6,779.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.76 : 17,870.40 = 4,523.04 : x
  2. Step 2: Convert to fraction form
    11,921.76/17,870.40 = 4,523.04/x
  3. Step 3: Cross multiply
    11,921.76x = 17,870.40 × 4,523.04
  4. Step 4: Simplify right side
    11,921.76x = 80,828,534.02
  5. Step 5: Solve for x
    x = 80,828,534.02/11,921.76
  6. Step 6: Final answer
    x = 6,779.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.