Home / 20,904.72-31,360.02-6,114.75

Finding the Fourth Proportional to 20,904.72, 31,360.02 and 6,114.75

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Solution

The fourth proportional to 20,904.72, 31,360.02 and 6,114.75 is: 9,172.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.72 : 31,360.02 = 6,114.75 : x
  2. Step 2: Convert to fraction form
    20,904.72/31,360.02 = 6,114.75/x
  3. Step 3: Cross multiply
    20,904.72x = 31,360.02 × 6,114.75
  4. Step 4: Simplify right side
    20,904.72x = 191,758,682.30
  5. Step 5: Solve for x
    x = 191,758,682.30/20,904.72
  6. Step 6: Final answer
    x = 9,172.98

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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.