Home / 36,512.40-54,768.60-13,140.72

Finding the Fourth Proportional to 36,512.40, 54,768.60 and 13,140.72

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Solution

The fourth proportional to 36,512.40, 54,768.60 and 13,140.72 is: 19,711.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,512.40 : 54,768.60 = 13,140.72 : x
  2. Step 2: Convert to fraction form
    36,512.40/54,768.60 = 13,140.72/x
  3. Step 3: Cross multiply
    36,512.40x = 54,768.60 × 13,140.72
  4. Step 4: Simplify right side
    36,512.40x = 719,698,837.39
  5. Step 5: Solve for x
    x = 719,698,837.39/36,512.40
  6. Step 6: Final answer
    x = 19,711.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.