Home / 13,458.18-18,552.82-8,913.25

Finding the Fourth Proportional to 13,458.18, 18,552.82 and 8,913.25

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Solution

The fourth proportional to 13,458.18, 18,552.82 and 8,913.25 is: 12,287.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.18 : 18,552.82 = 8,913.25 : x
  2. Step 2: Convert to fraction form
    13,458.18/18,552.82 = 8,913.25/x
  3. Step 3: Cross multiply
    13,458.18x = 18,552.82 × 8,913.25
  4. Step 4: Simplify right side
    13,458.18x = 165,365,913.37
  5. Step 5: Solve for x
    x = 165,365,913.37/13,458.18
  6. Step 6: Final answer
    x = 12,287.39

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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.