Home / 15,456.88-21,330.54-8,383.36

Finding the Fourth Proportional to 15,456.88, 21,330.54 and 8,383.36

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Solution

The fourth proportional to 15,456.88, 21,330.54 and 8,383.36 is: 11,569.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.88 : 21,330.54 = 8,383.36 : x
  2. Step 2: Convert to fraction form
    15,456.88/21,330.54 = 8,383.36/x
  3. Step 3: Cross multiply
    15,456.88x = 21,330.54 × 8,383.36
  4. Step 4: Simplify right side
    15,456.88x = 178,821,595.81
  5. Step 5: Solve for x
    x = 178,821,595.81/15,456.88
  6. Step 6: Final answer
    x = 11,569.06

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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.