Home / 13,427.30-18,531.37-8,122.10

Finding the Fourth Proportional to 13,427.30, 18,531.37 and 8,122.10

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Solution

The fourth proportional to 13,427.30, 18,531.37 and 8,122.10 is: 11,209.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.30 : 18,531.37 = 8,122.10 : x
  2. Step 2: Convert to fraction form
    13,427.30/18,531.37 = 8,122.10/x
  3. Step 3: Cross multiply
    13,427.30x = 18,531.37 × 8,122.10
  4. Step 4: Simplify right side
    13,427.30x = 150,513,640.28
  5. Step 5: Solve for x
    x = 150,513,640.28/13,427.30
  6. Step 6: Final answer
    x = 11,209.52

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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.