Home / 12,911.04-17,815.68-7,320.96

Finding the Fourth Proportional to 12,911.04, 17,815.68 and 7,320.96

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Solution

The fourth proportional to 12,911.04, 17,815.68 and 7,320.96 is: 10,102.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.04 : 17,815.68 = 7,320.96 : x
  2. Step 2: Convert to fraction form
    12,911.04/17,815.68 = 7,320.96/x
  3. Step 3: Cross multiply
    12,911.04x = 17,815.68 × 7,320.96
  4. Step 4: Simplify right side
    12,911.04x = 130,427,880.65
  5. Step 5: Solve for x
    x = 130,427,880.65/12,911.04
  6. Step 6: Final answer
    x = 10,102.04

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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.