Home / 21,153.84-29,193.66-11,723.01

Finding the Fourth Proportional to 21,153.84, 29,193.66 and 11,723.01

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Solution

The fourth proportional to 21,153.84, 29,193.66 and 11,723.01 is: 16,178.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.84 : 29,193.66 = 11,723.01 : x
  2. Step 2: Convert to fraction form
    21,153.84/29,193.66 = 11,723.01/x
  3. Step 3: Cross multiply
    21,153.84x = 29,193.66 × 11,723.01
  4. Step 4: Simplify right side
    21,153.84x = 342,237,568.12
  5. Step 5: Solve for x
    x = 342,237,568.12/21,153.84
  6. Step 6: Final answer
    x = 16,178.51

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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.