Home / 20,099.84-27,720.90-12,930.93

Finding the Fourth Proportional to 20,099.84, 27,720.90 and 12,930.93

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Solution

The fourth proportional to 20,099.84, 27,720.90 and 12,930.93 is: 17,833.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.84 : 27,720.90 = 12,930.93 : x
  2. Step 2: Convert to fraction form
    20,099.84/27,720.90 = 12,930.93/x
  3. Step 3: Cross multiply
    20,099.84x = 27,720.90 × 12,930.93
  4. Step 4: Simplify right side
    20,099.84x = 358,457,017.44
  5. Step 5: Solve for x
    x = 358,457,017.44/20,099.84
  6. Step 6: Final answer
    x = 17,833.83

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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.