Home / 10,221.78-15,332.64-2,826.21

Finding the Fourth Proportional to 10,221.78, 15,332.64 and 2,826.21

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Solution

The fourth proportional to 10,221.78, 15,332.64 and 2,826.21 is: 4,239.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.78 : 15,332.64 = 2,826.21 : x
  2. Step 2: Convert to fraction form
    10,221.78/15,332.64 = 2,826.21/x
  3. Step 3: Cross multiply
    10,221.78x = 15,332.64 × 2,826.21
  4. Step 4: Simplify right side
    10,221.78x = 43,333,260.49
  5. Step 5: Solve for x
    x = 43,333,260.49/10,221.78
  6. Step 6: Final answer
    x = 4,239.31

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1.5x scale

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.