Home / 13,242.33-18,280.22-8,468.55

Finding the Fourth Proportional to 13,242.33, 18,280.22 and 8,468.55

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Solution

The fourth proportional to 13,242.33, 18,280.22 and 8,468.55 is: 11,690.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.33 : 18,280.22 = 8,468.55 : x
  2. Step 2: Convert to fraction form
    13,242.33/18,280.22 = 8,468.55/x
  3. Step 3: Cross multiply
    13,242.33x = 18,280.22 × 8,468.55
  4. Step 4: Simplify right side
    13,242.33x = 154,806,914.74
  5. Step 5: Solve for x
    x = 154,806,914.74/13,242.33
  6. Step 6: Final answer
    x = 11,690.31

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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.