Home / 13,272.28-18,316.62-8,788.24

Finding the Fourth Proportional to 13,272.28, 18,316.62 and 8,788.24

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Solution

The fourth proportional to 13,272.28, 18,316.62 and 8,788.24 is: 12,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.28 : 18,316.62 = 8,788.24 : x
  2. Step 2: Convert to fraction form
    13,272.28/18,316.62 = 8,788.24/x
  3. Step 3: Cross multiply
    13,272.28x = 18,316.62 × 8,788.24
  4. Step 4: Simplify right side
    13,272.28x = 160,970,852.55
  5. Step 5: Solve for x
    x = 160,970,852.55/13,272.28
  6. Step 6: Final answer
    x = 12,128.35

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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.