Home / 21,210.18-29,270.33-11,650.96

Finding the Fourth Proportional to 21,210.18, 29,270.33 and 11,650.96

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Solution

The fourth proportional to 21,210.18, 29,270.33 and 11,650.96 is: 16,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.18 : 29,270.33 = 11,650.96 : x
  2. Step 2: Convert to fraction form
    21,210.18/29,270.33 = 11,650.96/x
  3. Step 3: Cross multiply
    21,210.18x = 29,270.33 × 11,650.96
  4. Step 4: Simplify right side
    21,210.18x = 341,027,444.02
  5. Step 5: Solve for x
    x = 341,027,444.02/21,210.18
  6. Step 6: Final answer
    x = 16,078.48

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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.