Home / 15,412.55-21,269.32-8,338.98

Finding the Fourth Proportional to 15,412.55, 21,269.32 and 8,338.98

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Solution

The fourth proportional to 15,412.55, 21,269.32 and 8,338.98 is: 11,507.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.55 : 21,269.32 = 8,338.98 : x
  2. Step 2: Convert to fraction form
    15,412.55/21,269.32 = 8,338.98/x
  3. Step 3: Cross multiply
    15,412.55x = 21,269.32 × 8,338.98
  4. Step 4: Simplify right side
    15,412.55x = 177,364,360.45
  5. Step 5: Solve for x
    x = 177,364,360.45/15,412.55
  6. Step 6: Final answer
    x = 11,507.79

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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.