Home / 13,318.16-19,980.12-6,747.92

Finding the Fourth Proportional to 13,318.16, 19,980.12 and 6,747.92

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Solution

The fourth proportional to 13,318.16, 19,980.12 and 6,747.92 is: 10,123.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.16 : 19,980.12 = 6,747.92 : x
  2. Step 2: Convert to fraction form
    13,318.16/19,980.12 = 6,747.92/x
  3. Step 3: Cross multiply
    13,318.16x = 19,980.12 × 6,747.92
  4. Step 4: Simplify right side
    13,318.16x = 134,824,251.35
  5. Step 5: Solve for x
    x = 134,824,251.35/13,318.16
  6. Step 6: Final answer
    x = 10,123.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.