Home / 15,383.07-21,228.63-8,309.49

Finding the Fourth Proportional to 15,383.07, 21,228.63 and 8,309.49

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Solution

The fourth proportional to 15,383.07, 21,228.63 and 8,309.49 is: 11,467.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.07 : 21,228.63 = 8,309.49 : x
  2. Step 2: Convert to fraction form
    15,383.07/21,228.63 = 8,309.49/x
  3. Step 3: Cross multiply
    15,383.07x = 21,228.63 × 8,309.49
  4. Step 4: Simplify right side
    15,383.07x = 176,399,088.70
  5. Step 5: Solve for x
    x = 176,399,088.70/15,383.07
  6. Step 6: Final answer
    x = 11,467.09

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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.