Home / 15,553.98-21,464.79-8,480.70

Finding the Fourth Proportional to 15,553.98, 21,464.79 and 8,480.70

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Solution

The fourth proportional to 15,553.98, 21,464.79 and 8,480.70 is: 11,703.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.98 : 21,464.79 = 8,480.70 : x
  2. Step 2: Convert to fraction form
    15,553.98/21,464.79 = 8,480.70/x
  3. Step 3: Cross multiply
    15,553.98x = 21,464.79 × 8,480.70
  4. Step 4: Simplify right side
    15,553.98x = 182,036,444.55
  5. Step 5: Solve for x
    x = 182,036,444.55/15,553.98
  6. Step 6: Final answer
    x = 11,703.53

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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.