Home / 13,283.76-18,315-11,175.60

Finding the Fourth Proportional to 13,283.76, 18,315 and 11,175.60

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Solution

The fourth proportional to 13,283.76, 18,315 and 11,175.60 is: 15,408.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.76 : 18,315 = 11,175.60 : x
  2. Step 2: Convert to fraction form
    13,283.76/18,315 = 11,175.60/x
  3. Step 3: Cross multiply
    13,283.76x = 18,315 × 11,175.60
  4. Step 4: Simplify right side
    13,283.76x = 204,681,114
  5. Step 5: Solve for x
    x = 204,681,114/13,283.76
  6. Step 6: Final answer
    x = 15,408.37

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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.