Home / 13,249.90-18,285.18-7,281.70

Finding the Fourth Proportional to 13,249.90, 18,285.18 and 7,281.70

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Solution

The fourth proportional to 13,249.90, 18,285.18 and 7,281.70 is: 10,048.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,249.90 : 18,285.18 = 7,281.70 : x
  2. Step 2: Convert to fraction form
    13,249.90/18,285.18 = 7,281.70/x
  3. Step 3: Cross multiply
    13,249.90x = 18,285.18 × 7,281.70
  4. Step 4: Simplify right side
    13,249.90x = 133,147,195.21
  5. Step 5: Solve for x
    x = 133,147,195.21/13,249.90
  6. Step 6: Final answer
    x = 10,048.92

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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.