Home / 13,376.96-18,445.60-9,128.48

Finding the Fourth Proportional to 13,376.96, 18,445.60 and 9,128.48

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Solution

The fourth proportional to 13,376.96, 18,445.60 and 9,128.48 is: 12,587.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.96 : 18,445.60 = 9,128.48 : x
  2. Step 2: Convert to fraction form
    13,376.96/18,445.60 = 9,128.48/x
  3. Step 3: Cross multiply
    13,376.96x = 18,445.60 × 9,128.48
  4. Step 4: Simplify right side
    13,376.96x = 168,380,290.69
  5. Step 5: Solve for x
    x = 168,380,290.69/13,376.96
  6. Step 6: Final answer
    x = 12,587.34

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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.