Home / 21,069.10-31,563.55-11,213.02

Finding the Fourth Proportional to 21,069.10, 31,563.55 and 11,213.02

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Solution

The fourth proportional to 21,069.10, 31,563.55 and 11,213.02 is: 16,798.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.10 : 31,563.55 = 11,213.02 : x
  2. Step 2: Convert to fraction form
    21,069.10/31,563.55 = 11,213.02/x
  3. Step 3: Cross multiply
    21,069.10x = 31,563.55 × 11,213.02
  4. Step 4: Simplify right side
    21,069.10x = 353,922,717.42
  5. Step 5: Solve for x
    x = 353,922,717.42/21,069.10
  6. Step 6: Final answer
    x = 16,798.19

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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.