Home / 15,519.72-21,416.54-8,446.12

Finding the Fourth Proportional to 15,519.72, 21,416.54 and 8,446.12

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Solution

The fourth proportional to 15,519.72, 21,416.54 and 8,446.12 is: 11,655.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.72 : 21,416.54 = 8,446.12 : x
  2. Step 2: Convert to fraction form
    15,519.72/21,416.54 = 8,446.12/x
  3. Step 3: Cross multiply
    15,519.72x = 21,416.54 × 8,446.12
  4. Step 4: Simplify right side
    15,519.72x = 180,886,687.94
  5. Step 5: Solve for x
    x = 180,886,687.94/15,519.72
  6. Step 6: Final answer
    x = 11,655.28

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Double scale
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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.