Home / 15,529.97-21,430.68-8,456.44

Finding the Fourth Proportional to 15,529.97, 21,430.68 and 8,456.44

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Solution

The fourth proportional to 15,529.97, 21,430.68 and 8,456.44 is: 11,669.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.97 : 21,430.68 = 8,456.44 : x
  2. Step 2: Convert to fraction form
    15,529.97/21,430.68 = 8,456.44/x
  3. Step 3: Cross multiply
    15,529.97x = 21,430.68 × 8,456.44
  4. Step 4: Simplify right side
    15,529.97x = 181,227,152.43
  5. Step 5: Solve for x
    x = 181,227,152.43/15,529.97
  6. Step 6: Final answer
    x = 11,669.51

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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.