Home / 10,647.64-15,971.76-2,856.48

Finding the Fourth Proportional to 10,647.64, 15,971.76 and 2,856.48

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Solution

The fourth proportional to 10,647.64, 15,971.76 and 2,856.48 is: 4,284.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,647.64 : 15,971.76 = 2,856.48 : x
  2. Step 2: Convert to fraction form
    10,647.64/15,971.76 = 2,856.48/x
  3. Step 3: Cross multiply
    10,647.64x = 15,971.76 × 2,856.48
  4. Step 4: Simplify right side
    10,647.64x = 45,623,013.00
  5. Step 5: Solve for x
    x = 45,623,013.00/10,647.64
  6. Step 6: Final answer
    x = 4,284.80

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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.