Home / 21,295.92-29,388.60-11,865

Finding the Fourth Proportional to 21,295.92, 29,388.60 and 11,865

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Solution

The fourth proportional to 21,295.92, 29,388.60 and 11,865 is: 16,373.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295.92 : 29,388.60 = 11,865 : x
  2. Step 2: Convert to fraction form
    21,295.92/29,388.60 = 11,865/x
  3. Step 3: Cross multiply
    21,295.92x = 29,388.60 × 11,865
  4. Step 4: Simplify right side
    21,295.92x = 348,695,739
  5. Step 5: Solve for x
    x = 348,695,739/21,295.92
  6. Step 6: Final answer
    x = 16,373.83

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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.