Home / 13,747.81-18,970.94-8,082.79

Finding the Fourth Proportional to 13,747.81, 18,970.94 and 8,082.79

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Solution

The fourth proportional to 13,747.81, 18,970.94 and 8,082.79 is: 11,153.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.81 : 18,970.94 = 8,082.79 : x
  2. Step 2: Convert to fraction form
    13,747.81/18,970.94 = 8,082.79/x
  3. Step 3: Cross multiply
    13,747.81x = 18,970.94 × 8,082.79
  4. Step 4: Simplify right side
    13,747.81x = 153,338,083.71
  5. Step 5: Solve for x
    x = 153,338,083.71/13,747.81
  6. Step 6: Final answer
    x = 11,153.64

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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.