Home / 11,112.60-15,337.44-7,138.68

Finding the Fourth Proportional to 11,112.60, 15,337.44 and 7,138.68

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Solution

The fourth proportional to 11,112.60, 15,337.44 and 7,138.68 is: 9,852.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112.60 : 15,337.44 = 7,138.68 : x
  2. Step 2: Convert to fraction form
    11,112.60/15,337.44 = 7,138.68/x
  3. Step 3: Cross multiply
    11,112.60x = 15,337.44 × 7,138.68
  4. Step 4: Simplify right side
    11,112.60x = 109,489,076.18
  5. Step 5: Solve for x
    x = 109,489,076.18/11,112.60
  6. Step 6: Final answer
    x = 9,852.70

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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.