Home / 10,788.64-16,188.48-7,851.28

Finding the Fourth Proportional to 10,788.64, 16,188.48 and 7,851.28

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Solution

The fourth proportional to 10,788.64, 16,188.48 and 7,851.28 is: 11,780.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,788.64 : 16,188.48 = 7,851.28 : x
  2. Step 2: Convert to fraction form
    10,788.64/16,188.48 = 7,851.28/x
  3. Step 3: Cross multiply
    10,788.64x = 16,188.48 × 7,851.28
  4. Step 4: Simplify right side
    10,788.64x = 127,100,289.25
  5. Step 5: Solve for x
    x = 127,100,289.25/10,788.64
  6. Step 6: Final answer
    x = 11,780.94

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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.