Home / 15,406.85-21,261.43-8,333.25

Finding the Fourth Proportional to 15,406.85, 21,261.43 and 8,333.25

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Solution

The fourth proportional to 15,406.85, 21,261.43 and 8,333.25 is: 11,499.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,406.85 : 21,261.43 = 8,333.25 : x
  2. Step 2: Convert to fraction form
    15,406.85/21,261.43 = 8,333.25/x
  3. Step 3: Cross multiply
    15,406.85x = 21,261.43 × 8,333.25
  4. Step 4: Simplify right side
    15,406.85x = 177,176,811.55
  5. Step 5: Solve for x
    x = 177,176,811.55/15,406.85
  6. Step 6: Final answer
    x = 11,499.87

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Double scale
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Similar ratio
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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.