Home / 21,439.12-32,153.64-12,083.28

Finding the Fourth Proportional to 21,439.12, 32,153.64 and 12,083.28

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Solution

The fourth proportional to 21,439.12, 32,153.64 and 12,083.28 is: 18,122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.12 : 32,153.64 = 12,083.28 : x
  2. Step 2: Convert to fraction form
    21,439.12/32,153.64 = 12,083.28/x
  3. Step 3: Cross multiply
    21,439.12x = 32,153.64 × 12,083.28
  4. Step 4: Simplify right side
    21,439.12x = 388,521,435.14
  5. Step 5: Solve for x
    x = 388,521,435.14/21,439.12
  6. Step 6: Final answer
    x = 18,122.08

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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.