Home / 10,345.21-14,276.70-5,629.81

Finding the Fourth Proportional to 10,345.21, 14,276.70 and 5,629.81

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Solution

The fourth proportional to 10,345.21, 14,276.70 and 5,629.81 is: 7,769.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.21 : 14,276.70 = 5,629.81 : x
  2. Step 2: Convert to fraction form
    10,345.21/14,276.70 = 5,629.81/x
  3. Step 3: Cross multiply
    10,345.21x = 14,276.70 × 5,629.81
  4. Step 4: Simplify right side
    10,345.21x = 80,375,108.43
  5. Step 5: Solve for x
    x = 80,375,108.43/10,345.21
  6. Step 6: Final answer
    x = 7,769.31

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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.