Home / 15,560.37-21,473.57-8,486.78

Finding the Fourth Proportional to 15,560.37, 21,473.57 and 8,486.78

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Solution

The fourth proportional to 15,560.37, 21,473.57 and 8,486.78 is: 11,711.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,560.37 : 21,473.57 = 8,486.78 : x
  2. Step 2: Convert to fraction form
    15,560.37/21,473.57 = 8,486.78/x
  3. Step 3: Cross multiply
    15,560.37x = 21,473.57 × 8,486.78
  4. Step 4: Simplify right side
    15,560.37x = 182,241,378.25
  5. Step 5: Solve for x
    x = 182,241,378.25/15,560.37
  6. Step 6: Final answer
    x = 11,711.89

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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.