Home / 13,388.75-18,453.40-8,904.48

Finding the Fourth Proportional to 13,388.75, 18,453.40 and 8,904.48

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Solution

The fourth proportional to 13,388.75, 18,453.40 and 8,904.48 is: 12,272.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.75 : 18,453.40 = 8,904.48 : x
  2. Step 2: Convert to fraction form
    13,388.75/18,453.40 = 8,904.48/x
  3. Step 3: Cross multiply
    13,388.75x = 18,453.40 × 8,904.48
  4. Step 4: Simplify right side
    13,388.75x = 164,317,931.23
  5. Step 5: Solve for x
    x = 164,317,931.23/13,388.75
  6. Step 6: Final answer
    x = 12,272.84

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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.