Home / 13,711.38-18,922.86-7,743.30

Finding the Fourth Proportional to 13,711.38, 18,922.86 and 7,743.30

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Solution

The fourth proportional to 13,711.38, 18,922.86 and 7,743.30 is: 10,686.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.38 : 18,922.86 = 7,743.30 : x
  2. Step 2: Convert to fraction form
    13,711.38/18,922.86 = 7,743.30/x
  3. Step 3: Cross multiply
    13,711.38x = 18,922.86 × 7,743.30
  4. Step 4: Simplify right side
    13,711.38x = 146,525,381.84
  5. Step 5: Solve for x
    x = 146,525,381.84/13,711.38
  6. Step 6: Final answer
    x = 10,686.41

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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.