Home / 19,918.10-29,812.35-15,511.70

Finding the Fourth Proportional to 19,918.10, 29,812.35 and 15,511.70

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Solution

The fourth proportional to 19,918.10, 29,812.35 and 15,511.70 is: 23,217.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.10 : 29,812.35 = 15,511.70 : x
  2. Step 2: Convert to fraction form
    19,918.10/29,812.35 = 15,511.70/x
  3. Step 3: Cross multiply
    19,918.10x = 29,812.35 × 15,511.70
  4. Step 4: Simplify right side
    19,918.10x = 462,440,229.50
  5. Step 5: Solve for x
    x = 462,440,229.50/19,918.10
  6. Step 6: Final answer
    x = 23,217.09

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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.