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Finding the Fourth Proportional to 21,869.18, 32,804.81 and 7,079.25

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Solution

The fourth proportional to 21,869.18, 32,804.81 and 7,079.25 is: 10,619.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.18 : 32,804.81 = 7,079.25 : x
  2. Step 2: Convert to fraction form
    21,869.18/32,804.81 = 7,079.25/x
  3. Step 3: Cross multiply
    21,869.18x = 32,804.81 × 7,079.25
  4. Step 4: Simplify right side
    21,869.18x = 232,233,415.80
  5. Step 5: Solve for x
    x = 232,233,415.80/21,869.18
  6. Step 6: Final answer
    x = 10,619.21

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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.