Home / 15,918.84-23,869.68-12,211.92

Finding the Fourth Proportional to 15,918.84, 23,869.68 and 12,211.92

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Solution

The fourth proportional to 15,918.84, 23,869.68 and 12,211.92 is: 18,311.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.84 : 23,869.68 = 12,211.92 : x
  2. Step 2: Convert to fraction form
    15,918.84/23,869.68 = 12,211.92/x
  3. Step 3: Cross multiply
    15,918.84x = 23,869.68 × 12,211.92
  4. Step 4: Simplify right side
    15,918.84x = 291,494,622.59
  5. Step 5: Solve for x
    x = 291,494,622.59/15,918.84
  6. Step 6: Final answer
    x = 18,311.30

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1.5x scale

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.