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Finding the Fourth Proportional to 21,608.93, 29,820.33 and 11,672.93

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Solution

The fourth proportional to 21,608.93, 29,820.33 and 11,672.93 is: 16,108.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,608.93 : 29,820.33 = 11,672.93 : x
  2. Step 2: Convert to fraction form
    21,608.93/29,820.33 = 11,672.93/x
  3. Step 3: Cross multiply
    21,608.93x = 29,820.33 × 11,672.93
  4. Step 4: Simplify right side
    21,608.93x = 348,090,624.67
  5. Step 5: Solve for x
    x = 348,090,624.67/21,608.93
  6. Step 6: Final answer
    x = 16,108.65

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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.