Home / 13,760.29-18,987.54-7,710.85

Finding the Fourth Proportional to 13,760.29, 18,987.54 and 7,710.85

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Solution

The fourth proportional to 13,760.29, 18,987.54 and 7,710.85 is: 10,640.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.29 : 18,987.54 = 7,710.85 : x
  2. Step 2: Convert to fraction form
    13,760.29/18,987.54 = 7,710.85/x
  3. Step 3: Cross multiply
    13,760.29x = 18,987.54 × 7,710.85
  4. Step 4: Simplify right side
    13,760.29x = 146,410,072.81
  5. Step 5: Solve for x
    x = 146,410,072.81/13,760.29
  6. Step 6: Final answer
    x = 10,640.04

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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.