Home / 12,911.19-17,813.57-7,604.07

Finding the Fourth Proportional to 12,911.19, 17,813.57 and 7,604.07

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Solution

The fourth proportional to 12,911.19, 17,813.57 and 7,604.07 is: 10,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.19 : 17,813.57 = 7,604.07 : x
  2. Step 2: Convert to fraction form
    12,911.19/17,813.57 = 7,604.07/x
  3. Step 3: Cross multiply
    12,911.19x = 17,813.57 × 7,604.07
  4. Step 4: Simplify right side
    12,911.19x = 135,455,595.21
  5. Step 5: Solve for x
    x = 135,455,595.21/12,911.19
  6. Step 6: Final answer
    x = 10,491.33

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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.