Home / 13,483.25-18,618.35-8,455.89

Finding the Fourth Proportional to 13,483.25, 18,618.35 and 8,455.89

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Solution

The fourth proportional to 13,483.25, 18,618.35 and 8,455.89 is: 11,676.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,483.25 : 18,618.35 = 8,455.89 : x
  2. Step 2: Convert to fraction form
    13,483.25/18,618.35 = 8,455.89/x
  3. Step 3: Cross multiply
    13,483.25x = 18,618.35 × 8,455.89
  4. Step 4: Simplify right side
    13,483.25x = 157,434,719.58
  5. Step 5: Solve for x
    x = 157,434,719.58/13,483.25
  6. Step 6: Final answer
    x = 11,676.32

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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.