Home / 15,403.94-21,257.45-8,330.37

Finding the Fourth Proportional to 15,403.94, 21,257.45 and 8,330.37

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Solution

The fourth proportional to 15,403.94, 21,257.45 and 8,330.37 is: 11,495.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,403.94 : 21,257.45 = 8,330.37 : x
  2. Step 2: Convert to fraction form
    15,403.94/21,257.45 = 8,330.37/x
  3. Step 3: Cross multiply
    15,403.94x = 21,257.45 × 8,330.37
  4. Step 4: Simplify right side
    15,403.94x = 177,082,333.63
  5. Step 5: Solve for x
    x = 177,082,333.63/15,403.94
  6. Step 6: Final answer
    x = 11,495.91

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Half scale
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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.