Home / 21,444.62-29,608.02-13,390.54

Finding the Fourth Proportional to 21,444.62, 29,608.02 and 13,390.54

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Solution

The fourth proportional to 21,444.62, 29,608.02 and 13,390.54 is: 18,487.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,444.62 : 29,608.02 = 13,390.54 : x
  2. Step 2: Convert to fraction form
    21,444.62/29,608.02 = 13,390.54/x
  3. Step 3: Cross multiply
    21,444.62x = 29,608.02 × 13,390.54
  4. Step 4: Simplify right side
    21,444.62x = 396,467,376.13
  5. Step 5: Solve for x
    x = 396,467,376.13/21,444.62
  6. Step 6: Final answer
    x = 18,487.96

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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.