Home / 13,211.83-18,256.49-9,620.55

Finding the Fourth Proportional to 13,211.83, 18,256.49 and 9,620.55

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Solution

The fourth proportional to 13,211.83, 18,256.49 and 9,620.55 is: 13,293.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.83 : 18,256.49 = 9,620.55 : x
  2. Step 2: Convert to fraction form
    13,211.83/18,256.49 = 9,620.55/x
  3. Step 3: Cross multiply
    13,211.83x = 18,256.49 × 9,620.55
  4. Step 4: Simplify right side
    13,211.83x = 175,637,474.87
  5. Step 5: Solve for x
    x = 175,637,474.87/13,211.83
  6. Step 6: Final answer
    x = 13,293.96

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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.