Home / 13,562.56-18,718.05-8,257.06

Finding the Fourth Proportional to 13,562.56, 18,718.05 and 8,257.06

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Solution

The fourth proportional to 13,562.56, 18,718.05 and 8,257.06 is: 11,395.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,562.56 : 18,718.05 = 8,257.06 : x
  2. Step 2: Convert to fraction form
    13,562.56/18,718.05 = 8,257.06/x
  3. Step 3: Cross multiply
    13,562.56x = 18,718.05 × 8,257.06
  4. Step 4: Simplify right side
    13,562.56x = 154,556,061.93
  5. Step 5: Solve for x
    x = 154,556,061.93/13,562.56
  6. Step 6: Final answer
    x = 11,395.79

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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.