Home / 21,501.43-29,671.47-11,940.76

Finding the Fourth Proportional to 21,501.43, 29,671.47 and 11,940.76

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Solution

The fourth proportional to 21,501.43, 29,671.47 and 11,940.76 is: 16,477.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,501.43 : 29,671.47 = 11,940.76 : x
  2. Step 2: Convert to fraction form
    21,501.43/29,671.47 = 11,940.76/x
  3. Step 3: Cross multiply
    21,501.43x = 29,671.47 × 11,940.76
  4. Step 4: Simplify right side
    21,501.43x = 354,299,902.12
  5. Step 5: Solve for x
    x = 354,299,902.12/21,501.43
  6. Step 6: Final answer
    x = 16,477.97

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Half scale
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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.