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Finding the Fourth Proportional to 21,661.41, 32,482.40 and 9,968.25

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Solution

The fourth proportional to 21,661.41, 32,482.40 and 9,968.25 is: 14,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,661.41 : 32,482.40 = 9,968.25 : x
  2. Step 2: Convert to fraction form
    21,661.41/32,482.40 = 9,968.25/x
  3. Step 3: Cross multiply
    21,661.41x = 32,482.40 × 9,968.25
  4. Step 4: Simplify right side
    21,661.41x = 323,792,633.96
  5. Step 5: Solve for x
    x = 323,792,633.96/21,661.41
  6. Step 6: Final answer
    x = 14,947.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.