Home / 21,980.48-30,333.10-11,908.92

Finding the Fourth Proportional to 21,980.48, 30,333.10 and 11,908.92

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Solution

The fourth proportional to 21,980.48, 30,333.10 and 11,908.92 is: 16,434.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980.48 : 30,333.10 = 11,908.92 : x
  2. Step 2: Convert to fraction form
    21,980.48/30,333.10 = 11,908.92/x
  3. Step 3: Cross multiply
    21,980.48x = 30,333.10 × 11,908.92
  4. Step 4: Simplify right side
    21,980.48x = 361,234,461.25
  5. Step 5: Solve for x
    x = 361,234,461.25/21,980.48
  6. Step 6: Final answer
    x = 16,434.33

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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.