Home / 13,213.92-18,235.83-7,907.76

Finding the Fourth Proportional to 13,213.92, 18,235.83 and 7,907.76

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Solution

The fourth proportional to 13,213.92, 18,235.83 and 7,907.76 is: 10,913.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.92 : 18,235.83 = 7,907.76 : x
  2. Step 2: Convert to fraction form
    13,213.92/18,235.83 = 7,907.76/x
  3. Step 3: Cross multiply
    13,213.92x = 18,235.83 × 7,907.76
  4. Step 4: Simplify right side
    13,213.92x = 144,204,567.04
  5. Step 5: Solve for x
    x = 144,204,567.04/13,213.92
  6. Step 6: Final answer
    x = 10,913.08

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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.