Home / 19,704.02-27,196.11-12,990.83

Finding the Fourth Proportional to 19,704.02, 27,196.11 and 12,990.83

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Solution

The fourth proportional to 19,704.02, 27,196.11 and 12,990.83 is: 17,930.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,704.02 : 27,196.11 = 12,990.83 : x
  2. Step 2: Convert to fraction form
    19,704.02/27,196.11 = 12,990.83/x
  3. Step 3: Cross multiply
    19,704.02x = 27,196.11 × 12,990.83
  4. Step 4: Simplify right side
    19,704.02x = 353,299,905.69
  5. Step 5: Solve for x
    x = 353,299,905.69/19,704.02
  6. Step 6: Final answer
    x = 17,930.35

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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.