Home / 21,735.61-29,990.81-13,232.06

Finding the Fourth Proportional to 21,735.61, 29,990.81 and 13,232.06

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Solution

The fourth proportional to 21,735.61, 29,990.81 and 13,232.06 is: 18,257.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,735.61 : 29,990.81 = 13,232.06 : x
  2. Step 2: Convert to fraction form
    21,735.61/29,990.81 = 13,232.06/x
  3. Step 3: Cross multiply
    21,735.61x = 29,990.81 × 13,232.06
  4. Step 4: Simplify right side
    21,735.61x = 396,840,118.53
  5. Step 5: Solve for x
    x = 396,840,118.53/21,735.61
  6. Step 6: Final answer
    x = 18,257.60

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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.